YANGON, Myanmar (AP) _ Myanmar's military has seized half a million amphetamines and 116 pounds of heroin in a town near the border with Thailand, the government said Sunday.

Acting on a tip, soldiers and narcotics police raided a house and arrested five people in Tachilek in northeastern Shan State. Inside, they found the pills and the heroin, which was broken down into 145 blocks.

The town straddles the border with Thailand and has long been known as a key smuggling route for drugs into Thailand and then on to Western nations.

Myanmar, also known as Burma, is the world's largest producer of opium, the raw material for heroin, and the source of many of the amphetamines flooding into Thailand.