KABUL, Afghanistan — A U.S. military spokesman says Afghan and coalition troops have seized 40 tons of hashish during a raid in southern Afghanistan.

Lt. Cmdr. Walter Matthews says the drugs were found during the Monday raid in Spin Boldak district of Kandahar province.

Border police commander Abdul Raziq says the drugs were found in the basement of a compound in Nawa Kili village. He says American military helicopters were used during the raid.

Afghanistan is the world's largest producer of opium, the main ingredient for the production of heroin. But the country also grows large quantities of cannabis, the plant used to produce hashish and marijuana.