At least 30 people were killed and up to 40 injured when a suicide bomber attacked a
traditional tribal meeting in north-western Pakistan on Sunday, officials said.
Pakistan is in the middle of a wave of violence blamed on al Qaeda-linked militants based in tribal lands on the Afghan border and there have been three suicide attacks in as many days.
Over 500 people have been killed in militant related violence this year alone.
A top government official in Darra Adam Kheil tribal region told Reuters the bomber detonated a device while tribal elders were holding an outdoor "jirga", or traditional meeting.
"They were finalising the formation of a committee of locals to take steps against miscreants and help the government," said Kamran Zaib, a government official.
"So far 30 people are confirmed killed and up to 40 wounded."
Local television showed pictures of residents and authorities cleaning up the blast site, a shady clearing surrounded by tall trees with a backdrop of rugged mountains.
Piles of torn clothing and bloody Muslim prayer caps were mixed up with the shattered remains of "charpoys", wood and rope daybeds.
Zaib said a head and identity card found at the scene were believed to belong to the bomber.
A suicide attack on a police funeral in north-west Pakistan killed at least 38 people on Friday, while on Monday the army's top medical officer was killed in a bomb attack in Rawalpindi.
The escalating violence has raised concern about the stability of the nuclear armed state as it passes through a period of political transition, with doubts over how long President Pervez Musharraf can hold onto power after his allies lost a parliamentary election on February 18.
Militants intensified their suicide bomb campaign after the army stormed Islamabad's Red Mosque last July to crush a militant student movement.
REUTERS
A bomb in Pakistan has killed at least 40 people and injured several more. The attack took place on the outskirts of Dara Adamkhel, a town which is close to the border with Afghanistan. It has been reported that the bombing may have been a suicide attack, although that has not yet been confirmed.

A Pakistani official at the scene said that "at this point, we the Pakistani government have reports of over 40 dead and scores of wounded." The Pakistani Interior Ministry spokesman said that "we the Interior Ministry are trying to get information. Initial reports suggest it was suicide attack."

The bomb exploded during a jirga, or tribal meeting, regarding security in the northwestern Pakistani town.

Dara Adamkhel is located about 40 km away from Peshawar, the provincial capital.