Hidden on private property in Wilmington, North Carolina, Federal agents found a plot of 2,400 marijuana plants in June 2009.

The growers, who had trespassed onto the property, had set up a camp to harvest the plants; the site had a gasoline-powered generator and an irrigation system that brought in water from a nearby river. Federal agents also found camping accessories like drinking water, a tent, personal toiletries and scattered pieces of used clothing.

As reported by CNN, U.S. Drug Enforcement Agency (DEA) agents staked out the camp, but after two days grew tired of waiting for the "owners" of the operation, individuals believed to have been linked to the Mexican drug cartel known as "La Familia Michoacana." The U.S. Department of Justice (DOJ) lists the cartel, the "Michoacan Family" in Spanish, as one of the principal traffickers of heroin, cocaine, marijuana and methamphetamines in the Southeast and Southwest United States.

In June of this year, the DEA and the DOJ concluded a two-year investigation by jointly dismantling a money-laundering scheme operated by Los Zetas, another powerful and bloodthirsty drug cartel that operates in the northeastern part of Mexico.

Charges were filed against the reputed new leader of the cartel, Miguel Angel Treviño Morales, also known as "Z-40," in an Austin, Texas court. Charges were also filed against his brothers Oscar Omar Treviño Morales and Jose Treviño Morales, a resident of the United States, as well as 12 other alleged members of the cartel, for taking part in a conspiracy to launder money earned from the trafficking of cocaine, marijuana and other drugs into the United States.

The Zetas had settled into Oklahoma and New Mexico by using horse breeding and racing to cover up their illegal activities. Through an established company, Tremor Enterprises, the cartel had placed horses -- including one named Cartel Número Uno (Number One Cartel) -- in some of the most important races in the U.S. according to the Mexican newspaper El Universal.

These arrests were just the latest in an ever-growing list of criminal cases against Mexican drug cartels which are finding their way into middle America.

"While a majority of [Latino residents in the area] are hard-working people like anyone else, it's an opportunity for cartels to have their foot soldiers do their thing, too," DEA agent Franklin told CNN, after finding the marijuana plants in North Carolina.

Over the last few years, there have been various reports on the operation of the cartels in U.S.-Mexico border states and large urban areas -- like Chicago -- which are quite distant from the border.

But evidence now points to no place in the U.S. being too remote for the cartels. Drugs, firearms and money tied to Mexican drug organizations have been found in small rural towns as well as lucrative suburbs.

And the number of these cases is growing. The National Drug Intelligence Center of the Department of Justice estimates that Mexican drug cartels control the majority of the methamphetamine, heroin and marjiuana that is distributed in the nation.

Roberta Jacobson, the current assistant secretary of state for Western Hemisphere affairs, said in April 2011 that Mexican drug cartels were operating in 230 cities in the United States.

"(Drug trafficking) is not a crisis that affects only the border," Jacobson said. " It's a crisis in our cities across the country."

However, the Justice Department's National Drug Intelligence Center estimates that in "2009 and 2010, cartels operated in 1,286 U.S. cities. The center named only 50 cities in 2006."

"All the cartels are still here, the Gulf cartel, the Beltran-Leyvas, the Sinaloa cartel, Los Zetas, the de Arellano Felix, the Familia Michoacana," said Sylvia Longmire, a former special agent in the Air Force and an ex-analyst of California border security.

The problem will not go away and it won't decrease while drugs remain illegal and demand is high," Longmire said.

Charles Bowden, "noted author on the Mexican drug war," explained to CNN that the cartels seek out communities with an existing Hispanic population and proximity to highways through which drugs and proceeds can be moved.

"I'm not saying Mexicans come here to do crime, but Mexicans who move drugs choose to do it through areas where there are already Mexicans," he said.

Related on HuffPost:

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  • Los Zetas

    The Zetas are thought to have become the <a href="http://www.aljazeera.com/news/americas/2012/01/201212645739134301.html" target="_hplink">largest cartel</a> in Mexico recently, <a href="http://www.bbc.co.uk/news/world-latin-america-16712239" target="_hplink">operating</a> in over half the country's states. <b>Leader:</b> The notoriously brutal gangster <a href="http://www.huffingtonpost.com/2012/08/23/miguel-angel-trevino-zetas_n_1826236.html" target="_hplink">Miguel Angel Trevino Morales</a> (alias "Z-40") is believed to be the new leader of the Zetas drug cartel following a showdown with Heriberto "El Lazca" Lazcano. Trevino is infamous for human "cookouts" in which he stuffs people in oil drums and lights them on fire. "If you get called to a meeting with him, you're not going to come out of that meeting," a U.S. official <a href="http://www.huffingtonpost.com/2012/08/23/miguel-angel-trevino-zetas_n_1826236.html" target="_hplink">said of Trevino</a>. <strong>Territory:</strong> The Zetas control a swath of territory on Mexico's east coast extending along the Gulf of Mexico. <strong>Rivals:</strong> The Zetas are bitter rivals with the Sinaloa Cartel. In turn, the group is allied with the Beltran Leyva Cartel and the Tijuana Cartel. <strong>Notable incidents:</strong> In August 2011, gunmen <a href="http://www.huffingtonpost.com/2011/08/25/casino-royale-attack-leav_n_937413.html" target="_hplink">stormed the Casino Royale</a> in Monterrey and lit it on fire, killing dozens. In February 2012, 30 prisoners linked to the Zetas <a href="http://www.bbc.co.uk/news/world-latin-america-17135362" target="_hplink">broke free</a> from Apodaca jail during a riot. 44 inmates from the rival Gulf Cartel were killed. In May 2012, the Zetas cartel allegedly was involved in <a href="http://edition.cnn.com/2012/05/13/world/americas/mexico-remains/index.html" target="_hplink">dumping 49 decapitated bodies</a> on a busy highway near Monterrey. <em>Photo: Army soldiers flank Daniel Ramirez, alias "El Loco," during his presentation to the media in Mexico City, Monday, May 21, 2012. (AP Photo/Alexandre Meneghini)</em>

  • Sinaloa Cartel

    Mexico's second major cartel reportedly <a href="http://www.nytimes.com/2012/06/17/magazine/how-a-mexican-drug-cartel-makes-its-billions.html?pagewanted=all" target="_hplink">operates</a> in over a dozen countries, including trafficking cocaine and other drugs to the United States. <strong>Leader:</strong> Mexico's <a href="http://www.huffingtonpost.com/2012/08/07/joaquin-el-chapo-guzman-mexicos-most-wanted_n_1751671.html" target="_hplink">most-wanted drug lord</a>, Joaquin "El Chapo" Guzman, remains at large after he <a href="http://www.huffingtonpost.com/2012/08/07/joaquin-el-chapo-guzman-mexicos-most-wanted_n_1751671.html" target="_hplink">escaped from prison</a> by hiding in a laundry truck in 2001. In 2012, Guzman <a href="http://www.forbes.com/sites/erincarlyle/2012/03/13/billionaire-druglords-el-chapo-guzman-pablo-escobar-the-ochoa-brothers/" target="_hplink">appeared</a> on <em>Forbes</em>' list of billionaires for the fourth year in a row. <strong>Territory:</strong> The Sinaloa Cartel operates in northwestern Mexico (<a href="http://www.insightcrime.org/criminal-groups/mexico/sinaloa-cartel/item/192-sinaloa-cartel" target="_hplink">map</a>). <strong>Rivals:</strong> Arch-nemesis of Los Zetas, the Sinaloa cartel is <a href="http://www.insightcrime.org/criminal-groups/mexico/sinaloa-cartel/item/192-sinaloa-cartel" target="_hplink">allied</a> with the Gulf cartel and the Familia Michoacana. <strong>Notable Incidents:</strong> A 755-foot <a href="http://articles.latimes.com/2012/jul/12/nation/la-na-nn-drug-tunnel-details-20120712" target="_hplink">smuggling tunnel</a> running under a U.S. border fence was suspected to be operated by the Sinaloa cartel. The Sinaloa cartel may have been responsible for massacres in the border city of <a href="http://www.guardian.co.uk/world/2012/may/05/bodies-bridge-23-mexico-drug" target="_hplink">Nuevo Laredo in May 2012</a>. The bodies of 23 people <a href="http://www.guardian.co.uk/world/2012/may/05/bodies-bridge-23-mexico-drug" target="_hplink">were found</a> decapitated or hanging from a bridge, followed hours later by the discovery of 14 human heads in coolers near city hall. <em>Photo: In this June 10, 1993, file photo, Joaquin Guzman Loera, alias "El Chapo" Guzman, is shown to the press after his arrest at the high security prison of Almoloya de Juarez on the outskirts of Mexico City. (AP Photo/Damian Dovarganes, File)</em>

  • Gulf Cartel

    One of the oldest cartels, the Gulf Cartel recently has lost influence, but is <a href="http://www.insightcrime.org/criminal-groups/mexico/gulf-cartel" target="_hplink">backed up</a> by the Sinaloa cartel. <strong>Leader:</strong> Jorge Eduardo Costilla Sanchez, alias "El Coss." The U.S. has a <a href="http://www.state.gov/j/inl/narc/rewards/115354.htm" target="_hplink">$5 million bounty</a> on his head. Costilla Sanchez once allegedly held FBI and DEA agents at gunpoint with AK-47s and <a href="http://www.state.gov/j/inl/narc/rewards/115354.htm" target="_hplink">threatened</a> to kill them. <strong>Territory:</strong> The cartel operates out of the state of Tamaulipas, with other bases in Matamoros, Nuevo Laredo, and Reynosa, <a href="http://www.insightcrime.org/criminal-groups/mexico/gulf-cartel/item/90-gulf-cartel" target="_hplink">according to InsightCrime</a>. <strong>Rivals:</strong> The Gulf Cartel is allied with Sinaloa and enemies of Los Zetas. <strong>Notable Incident:</strong> In June, footage purporting to show masked members of the Gulf Cartel beheading Zetas members <a href="http://articles.nydailynews.com/2012-06-29/news/32475737_1_gulf-cartel-drug-cartel-leader-zetas-cartel" target="_hplink">surfaced online</a>. <em>Photo: From left: Andrea Escamilla Juarez ("La Negra," 21), Rene Cortez Zapata ("El Nicanor," 45), Nestor Hugo Del Angel Ferretis ("El Tango," 29), Jose De Jesus Mosqueda Mora ("El Chucho," 41), Jorge Fernando Larios Nossiff ("El Camaron", 57), and Ricardo Abraham Velazquez Del Castillo ("El Ricardillo, 24), all alleged members of a cell belonging to the Gulf Cartel criminal organization, are shown to the press by federal police in Mexico City, Friday, Dec. 9, 2011. (AP Photo/German Garcia)</em>

  • Juarez Cartel

    The Juarez Cartel reportedly <a href="http://www.insightcrime.org/criminal-groups/mexico/juarez-cartel" target="_hplink">smuggles</a> tons of narcotics into the U.S., using local gangs to <a href="http://www.insightcrime.org/criminal-groups/mexico/juarez-cartel" target="_hplink">act as enforcers</a>. <strong>Leader:</strong> Vicente Carrillo Fuentes, aka "<a href="http://www.time.com/time/specials/packages/article/0,28804,2019221_2019202_2019187,00.html" target="_hplink">The Viceroy</a>," has a $5 million bounty on his head from the U.S. government. <strong>Territory:</strong> Based in Ciudad Juarez, across the border from El Paso, Texas. <strong>Notable incidents:</strong> In July 2011, Antonio Acosta Hernandez ("El Diego") told police he had <a href="http://articles.cnn.com/2011-07-31/world/mexico.drug.arrest_1_lesley-enriquez-consulate-employee-drug-gang?_s=PM:WORLD" target="_hplink">ordered the killings</a> of 1,500 people. In 2010, a report suggested that an associate group of the Juarez Cartel was <a href="http://www.borderlandbeat.com/2010/08/juarez-cartel-trains-beautiful-women-as.html" target="_hplink">training beautiful</a>, young women as assassins. <strong>Rivals:</strong> Sinaloa cartel. <em>Photo: Jose Antonio Acosta Hernandez, 33, is presented to the media by federal police officers in Mexico City, Sunday July 31, 2011. According to federal officials, Acosta, nicknamed "El Diego," is a key drug cartel figure, who acknowledged ordering 1,500 killings. Authorities identified Acosta as head of La Linea, a gang of hit men and corrupt police officers who act as enforcers for the Juarez Cartel. (AP Photo/Marco Ugarte)</em>

  • Tijuana Cartel

    The Tijuana Cartel, aka the Arellano Felix Organization, <a href="http://www.insightcrime.org/criminal-groups/mexico/tijuana-cartel/item/193-tijuana-cartel" target="_hplink">operates</a> in the strategically important town of Tijuana, bordering San Diego, California. The cartel was depicted in the film '<a href="http://www.imdb.com/title/tt0181865/" target="_hplink">Traffic</a>' (2000). The cartel has been <a href="http://www.insightcrime.org/criminal-groups/mexico/tijuana-cartel" target="_hplink">weakened</a> by infighting. <strong>Leader:</strong> Fernando Sanchez Arellano, alias "El Ingeniero." (The "Engineer.") <strong>Territory:</strong> Baja California <strong>Notable Incident:</strong> The cartel allegedly dissolved bodies using chemicals or burned them in the desert to <a href="http://www.cbsnews.com/8301-202_162-57408368/tijuana-cartel-leader-arellano-felix-gets-25-yrs/" target="_hplink">cover their tracks</a>. <em>Photo: Seized drugs and packages of marijuana and crystal meth are displayed during a presentation to the press in Tijuana, Mexico, Wednesday, March 24, 2010. (AP Photo/Guillermo Arias)</em>

  • Knights Templar

    The Knights Templar are a bizarre, cult-like group. <a href="http://www.guardian.co.uk/world/2012/aug/26/mexican-corpses-acapulco" target="_hplink">The Guardian writes</a>: "Propaganda from the Knights Templar blends a mix of Michoacan regionalism, Christianity and revolutionary slogans." The Knights Templar are a major trafficker of methamphetamine. <strong>Leader:</strong> Servando Gómez Martínez, alias "La Tuta," <a href="http://www.insightcrime.org/insight-latest-news/item/3085-knights-templar-leader-appears-in-video" target="_hplink">denied</a> in a filmed address that the Knights Templar are a cartel. Gómez Martínez is also called "El Profe" ("The Professor"), and <a href="http://www.insightcrime.org/component/k2/item/319-familia-michoacana-leader-reportedly-employed-as-teacher" target="_hplink">InSight reports</a> that Gómez Martínez was still a publicly-employed teacher as of 2010. <strong>Notable Incident:</strong> The group recently was <a href="http://www.huffingtonpost.com/2012/05/28/sabritas-firebombing-attack_n_1551355.html" target="_hplink">blamed</a> for coordinated firebombings of a PepsiCo subsiadary. It was a Mexican drug cartel's first attack on a transnational company. <strong>Rivals:</strong> Los Zetas. <em>Photo: Juan Gabriel Orozco Favela, alias "El Gasca," an alleged member of the Knights Templar drug cartel, is escorted by Mexican Army soldiers as he is presented to the media in Mexico City, Tuesday, Nov. 15, 2011. (AP Photo/Alexandre Meneghini)</em>

  • Beltran Leyva (Disbanded)

    The Beltran Leyva largely disbanded following a power struggle after the death of its leader, Arturo Beltrán Leyva. <strong>Leader:</strong> Héctor Beltrán Leyva, alias "El Ingeniero," or "El H," is wanted for up to <a href="http://www.state.gov/j/inl/narc/rewards/133311.htm" target="_hplink">$5 million</a> in the U.S. He is the brother of former cartel leader Arturo Beltrán Leyva. <strong>Territory:</strong> Northern Sinaloa. <strong>Rivals:</strong> Allied with Los Zetas after <a href="http://www.cbc.ca/news/world/story/2011/08/28/f-mexico-drug-cartels.html" target="_hplink">splitting from Sinaloa</a> in 2008. <strong>Notable incident:</strong> Former cartel chief Arturo Beltrán Leyva died in a <a href="http://latimesblogs.latimes.com/laplaza/2009/12/mexico-drug-lord-arturo-beltran-leyva-mexican-navy-marines-raid-felipe-calderon-drug-war.html" target="_hplink">shootout</a> involving 200 Mexican marines in late 2009. <em>Photo: In this photo released by Mexico's Navy, Navy marines arrest alleged drug kingpin Sergio Villarreal Barragan, alias "El Grande," center, in Puebla, Mexico, Sunday Sept. 12, 2010. (AP Photo/Mexican Navy)</em>

  • La Familia Michoacana (Extinct)

    La Familia Michoacana, a pseudo-religious gang, has been largely <a href="http://www.excelsior.com.mx/index.php?m=nota&id_nota=779205&rss=1" target="_hplink">disbanded</a>. <strong>Leader: </strong> Nazario Moreno González, alias "El Más Loco" ("The Craziest One"), died in December 2010. <em>Photo: Martin Rosales Magana, aka "El Terry" and alleged leader of the Mexican La Familia drug cartel, is escorted by police officers during his presentation to the media in Mexico City, Wednesday, Oct. 5, 2011. Authorities allege Rosales is one of the last major leaders of the La Familia cartel. (AP Photo/Leonardo Casas)</em>