EL PASO, Texas -- A Dallas trucker imprisoned for seven months in Mexico on accusations that he tried to smuggle assault rifle ammunition into the country broke down in tears Friday when he returned to the U.S., saying he had at times given up hope.

Jabin Bogan maintains he was on his way to Phoenix to deliver the ammunition in April when he took a wrong highway exit and accidentally crossed the border into Mexico. Despite his insistence it was an honest mistake, the 27-year-old was arrested and taken to a Mexican maximum security prison.

"Some days I gave up hope. Some days I felt like God was, to be honest in my heart, like God was laughing. Like he was just punishing me for no reason. I felt like just giving up," he said during a brief news conference in El Paso shortly after arriving back in the U.S.

Bogan tearfully thanked his supporters, and said that at times he felt like taking his own life or someone else's.

"I was the only black American person in the whole prison. God brought me through and I made it," he said.

Bogan was released from the Mexican prison last week but had been detained by immigration authorities until Friday. He was found guilty of possession of military ammunition and sentenced to three years, but the ruling was later commuted for time served and a fine.

He was arrested on April 17 in Ciudad Juarez, Mexico, just across the border from El Paso. Bogan said he was headed to Phoenix when he got lost, and he told Mexican authorities that a law enforcement officer at the border had told him to continue driving across the international bridge.

Bogan said he attempted to turn back when he realized he had crossed into Mexico, but the layout of the traffic lanes prevented him from returning without first crossing into the truck inspection area in Juarez, where his truck was searched.

He said Friday that when he acknowledged to the agents he had ammunition, "they said, `in this side of the country it's illegal to have bullets.' And that's when everything went upside down they took me in and never let me out."

During his trial, Mexican customs agents contradicted prosecutors' claim that Bogan had 268,000 bullets hidden under the floorboards of his 18-wheeler's trailer when he was arrested. Agents testified in June that Bogan was trying to make a U-turn back into the U.S. when they found the ammunition bundled on top of wooden pallets inside the trailer.

Bogan was arrested less than 100 feet from a giant billboard that reads, "no more weapons." The sign, unveiled by Mexican President Felipe Calderon two months before Bogan was caught, was made out of seized high-caliber rifles and ammunition.

Calderon has blamed lax U.S. gun laws for the flow of weapons into Mexico.

An appeal filed in August by Bogan's lawyer in Mexico, Emilio de la Rosa, reduced the charge from smuggling to possession of military ammunition. That allowed Bogan to be released after serving a portion of his sentence and paying a fine. He also was sentenced to supervised release, which he can do by mail.

The ammunition belonged to United Nations Ammunition. De la Rosa said the bullets would not be returned to the company.

A spokesman with the Mexican Attorney General did not immediately respond to a request seeking comment.

Bogan's attorney, Carlos Spector, maintains that Bogan made an honest mistake. But he said his lawyers decided not to fight the case, in part because of the potential political implications.

"He (De la Rosa) knew the options were get him out in six or seven months or sink him with a 30-year-sentence. Asking for a not-guilty sentence was impossible because the Mexican government had to get something out of this," Spector said.

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  • Jabin Akeem Bogan, Aletha Smith

    Aletha Smith embraced her son, truck driver Jabin Akeem Bogan, 27, during a press conference shortly after re-entering the U.S. after his release from a Mexican prison Friday Nov. 23, 2012. The Dallas trucker imprisoned for seven months in Mexico on accusations that he tried to smuggle assault rifle ammunition into the country broke down in tears Friday when he returned to the U.S., saying he had at times given up hope. (AP Photo/El Paso Times, Victor Calzada)

  • Jabin Bogan and his mother Aletha Smith participate in a news conference on Friday, Nov. 23, 2012 in El Paso, Texas. The 27-year-old Dallas truck driver was released after seven months in a prison in Mexico accused of ammunition smuggling. Bogan was arrested in April after crossing the border by mistake with 268,000 rounds of ammunition. (AP Photo/Juan Carlos Llorca)

  • Jabin Bogan and his mother Aletha Smith participate in a news conference on Friday, Nov. 23, 2012 in El Paso, Texas. The 27-year-old Dallas truck driver was released after seven months in a prison in Mexico accused of ammunition smuggling. Bogan was arrested in April after crossing the border by mistake with 268,000 rounds of ammunition. (AP Photo/Juan Carlos Llorca)

  • Jabin Akeem Bogan

    A tear begins to roll down Jabin Bogan's cheek as he talks about his release from a Mexican prison, Friday, Nov. 23, 2012, in El Paso, Texas, during a news conference. The Dallas trucker was imprisoned for seven months in Mexico on accusations that he had tried to smuggle in assault rifle ammunition. The ammunition belonged to United Nations Ammunition. (AP Photo/El Paso Times, Victor Calzada)

  • Aletha Smith, mother of trucker Jabin Bogan, who was arrested with 268,000 bullets in Mexico speaks pauses during a news conference, Wednesday, May 2 , 2012 in El Paso, Texas. Bogan claims he took a wrong turn that led him into Mexico while transporting the cargo for an ammunition dealer in Arizona. (AP Photo/Juan Carlos Llorca)

  • Kevin Huckabee, left, who also claims his son was wrongfully arrested in Mexico, holds a bullet as Aletha Smith, mother of trucker Jabin Bogan looks on during a news conference, Wednesday, May 2, 2012 in El Paso, Texas. Bogan, who was arrested with 268,000 bullets in Mexico, claims he took a wrong turn that led him into Mexico while transporting the cargo for an ammunition dealer in Arizona. (AP Photo/Juan Carlos Llorca)

  • File- In this July 5, 2012 file photo, attorney Emilio de La Rosa, left, and forensics expert Mario Gomez, right, talk to a customs and court officials at the Las Americas Bridge in Juarez, Mexico while doing a reconstruction of the events that lead to the arrest of trucker Jabin Bogan. Bogan was taken into custody April 17, 2012 with 268,000 bullets in Mexico. A Mexican appeals judge on Thursday significantly lessened the charge Bogan who says he made a wrong turn into Mexico. (AP Photo/ Juan Carlos Llorca, File)