A suicide bomber detonated his explosives on Saturday in a busy street in Pakistan's tribal region along Afghanistan on Saturday, killing at least eight people and injuring about a dozen, security officials said, dpa reported
The bombing took place in Bajaur district, one of the seven tribal district plagued by Islamist militancy.
"The targets of the attack were some leaders of the Salarzai Lashkar (Salarzai tribal militia)," said a local government official named Saz Mohammad Khan. "Most of the eight killed and 10 injured are from Salarzai tribe."
The explosion demolished a hotel and rescue workers were trying to pull out people buried under the debris.
Salarzai tribal militia has assisted Pakistani forces in driving Taliban and al-Qaeda militants from their area. Its members have been a constant target of militant attacks.
Saturday's bombing is latest in the series of attacks by the Taliban since the killing of al-Qaeda chief Osama bin laden by US special forces in north-western city of Abbottabad.
On Thursday, a suicide bomber detonated explosives in a truck near government buildings in north-western district of Hangu, killing 32 people and injuring over 50.
The explosion also flattened some state buildings hours before US State of Secretary Hillary Rodham Clinton met with Pakistani civilian and military leaders on Friday.
She praised in war against terrorism but urged the country to double efforts to eliminate militant hideouts particularly in its mountainous tribal region near Afghan border.
"Osama bin Laden is dead but al-Qaeda and its syndicated terror remains a serious threat to us both," Clinton said. "We will do our part and we look to the government of Pakistan to take the decisive steps in days ahead."