Iran police killed 10 drug smugglers on Sunday in a shootout near the Afghan border, state television said.
According to the report, the clash erupted when the bandits tried to sneak through the frontier some 750 miles east of the Teheran.
After the shootout, police confiscated more than 2,500 pounds of drugs, mostly opium.
Last week, Iran said bandits killed 12 border guards in an ambush near the frontier with Pakistan.
The area is a key crossing point for narcotics destined for Europe and the Persian Gulf countries, and has seen frequent clashes between police and drug smugglers.