Burmese state media reported Wednesday that border police seized a large quantity of heroin and other illegal drugs near the border with Thailand this week.
The reports say an anti-drug squad found more than 700 kilograms of heroin and nearly 3 million methamphetamine pills in the town of Tachilek Monday. Officers arrested four people and confiscated two guns and ammunition from the raid on two houses.
Last month, Burmese police seized about 760 kilograms of heroin and large quantities of other drugs in the same town.
Burma is one of the world's largest producers of heroin. It is also a major source of methamphetamine. The illegal drugs are often smuggled into Thailand.
Some information for this report was provided by AP and Reuters.