A roadside bomb in western Afghanistan on Sunday killed three tribal elders, an official said, dpa reported.
"Three tribal elders of the Achakzai tribe were killed when their car drove over a roadside bomb," said Mohammed Younis Rasoli, the deputy governor for the western province of Farah.
The incident took place in Bala Buluk district. "They were heading to a meeting of around 150 local leaders from different villages," Rasoli said.
No group has yet claimed responsibility for the deaths but the deputy governor blamed the "enemies of peace," a term often used by Afghan officials to describe Taliban militants.
Roadside bombs, the top killer of Afghan and NATO forces, are the primary weapon of the Taliban, who have been waging a bloody war against the 150,000 international troops in Afghanistan.
Roadside bombs, as well as suicide bombings, are also responsible for more than half of the civilian deaths in the conflict.
According to a United Nation's report, at least 1,141 of 2,080 civilian deaths in 2010 were caused by such attacks.