KABUL, Afghanistan -- Afghan counternarcotics police poured gasoline on more than 24 tons of narcotics and other illegal substances, then set the pile ablaze on the outskirts of Kabul on Sunday, officials said.

Afghan authorities said the drugs, drug-making chemicals and alcohol were seized in and around the capital during the past nine months.

Baz Mohammad Ahmadi, deputy minister of counternarcotics at the Interior Ministry, said the destroyed drugs included 1,772 kilograms (3,900 pounds) of heroin; 2,764 kilograms (6,070 pounds) of opium; and 140 kilograms (308 pounds) of hashish. More than 12,100 liters (3,200 gallons) of alcohol as well as raisins used to make alcohol also were destroyed.

"It is a considerable amount of narcotics," Ahmadi told reporters at the site as a cloud of black smoke spiraled over the burning drugs. "Compared with (a similar burn from a comparable period) last year, it's a 35 to 45 percent increase."

He said 907 suspects had been arrested in connection with the seizure of the drugs and other materials.

The police put the illegal substances into a large pile, mixed in some logs, doused it with gas and then lighted the material as police stood by applauding.

Stephen McFarland, coordinating director for rule of law and law enforcement at the U.S. Embassy in Kabul, and other foreign officials attended the burn in support of the Afghan government's drug interdiction work.

Loading Slideshow...
  • This Thursday, Oct. 11, 2012, photo made available by the Florida Fish and Wildlife Conservation Commission shows a giant eyeball from a mysterious sea creature that washed ashore and was found by a man walking the beach in Pompano Beach, Fla. on Wednesday. (AP Photo/Florida Fish and Wildlife Conservation Commission, Carli Segelson)

  • A man takes part in racing Pacu Jawi or 'mud cow racing" in Padang Pajang, West Sumatra, Indonesia, Saturday, Oct 13, 2012. (AP Photo/Vincent Thian)

  • A naked protester runs through Syntagma Square by the parliament building as demonstrators clash with police while protesting against the visit to Greece by Germany's Chancellor Angela Merkel October 9, 2012 in Athens, Greece. (Photo by Milos Bicanski/Getty Images)

  • Gil Florini, priest of Saint-Pierre-d'Arene's church, blesses a dog during a mass dedicated to animals on October 7, 2012 in Nice, southeastern France. (VALERY HACHE/AFP/GettyImages)

  • An elderly man takes his afternoon nap in a shopping mall on Friday Oct. 12, 2012 in Singapore. (AP Photo/Wong Maye-E)

  • Spanish actor Nacho Vidal performs Babylon Opera with La Fura dels Baus at the Barcelona Erotic Fair ( Salon Erotico de Barcelona) on October 12, 2012 in Barcelona, Spain. (Photo by Miquel Benitez/Getty Images)

  • A Cirque du Soleil cast member poses prior to teaching the public a dance at Customs House on October 3, 2012 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

  • An artisan works on an idol of Hindu Goddess Durga at a workshop ahead of Durga Puja festival in Allahabad, India, Thursday, Oct. 11, 2012. Durga Puja will be celebrated from Oct. 20-24. (AP Photo/Rajesh Kumar Singh)

  • A camel rider kisses his camel as he waits for customers at the historical site of the Giza Pyramids, near Cairo, Egypt, Thursday, Oct. 11, 2012. (AP Photo/Nariman El-Mofty)

  • A woman who plays the role of Chun Hyang performs an aerial stunt during the acrobatic play of "Tale of Chun Hyang" at the Pyongyang Circus Theatre to mark the 15th anniversary of the late North Korean leader Kim Jong Il's election as general secretary of the Workers' Party of Korea in Pyongyang, North Korea, Monday, Oct. 8, 2012. (AP Photo/Jon Chol Jin)

  • This time exposure photo shows the Falcon 9 SpaceX rocket lifting off from space launch complex 40 at the Cape Canaveral Air Force Station in Cape Canaveral, Fla. on Sunday, Oct. 7, 2012. (AP Photo/Terry Renna)

  • Supporters of President Hugo Chavez celebrate outside the Miraflores presidential palace in Caracas, Venezuela, Sunday, Oct. 7, 2012. Venezuela's electoral council said late Sunday President Hugo Chavez has won re-election, defeating challenger Henrique Capriles.(AP Photo/Ramon Espinosa)