Paktika Governor Akram Khpalwak blamed Taliban guerrillas for the attack.
Ten other Afghans died in two separate attacks across Afghanistan today.
Meanwhile, officials said that Afghan and U.S.-led coalition forces killed 18 suspected Taliban in two clashes in southern Afghanistan on May 23.
The Afghan Insurgency
A U.S. military vehicle damaged by insurgents near Kandahar (epa)
HOMEGROWN OR IMPORTED? As attacks against Afghan and international forces continue relentlessly, RFE/RL hosted a briefing to discuss the nature of the Afghan insurgency. The discussion featured Marvin Weinbaum, professor emeritus of political science at the University of Illinois at Urbana-Champaign, and RFE/RL Afghanistan analyst Amin Tarzi.
LISTENListen to the entire briefing (about 83 minutes):
Real Audio Windows Media