'Dozens die' in Pakistan bombing
At least 40 people have been killed in a suspected suicide bomb attack in north-western Pakistan, officials say.
The blast took place in the town of Khar in the Bajaur region.
Reports said the bomber targeted a crowd of more than 1,000 displaced people receiving food aid at a distribution centre. Dozens of people have been injured.
There have been many recent attacks in the region near the Afghan border - a Taliban and al-Qaeda stronghold.
CiviliansNo group has so far said it carried out Saturday's attack at the centre, used by the World Food Programme and other aid agencies to distribute food to conflict-affected people in the region.
"I myself have counted 40 bodies but the death toll could rise as several wounded people are in critical condition," Dosti Rehman, an official at the main government hospital in the region, told Reuters news agency.
Dozens of injured people are being taken to hospital by helicopter.
Most of the victims are believed to be civilians who had fled the fighting between Taliban militants and the Pakistani army, the BBC's Aleem Maqbool in Islamabad reports.
The tribal district of Bajaur, where the attack took place, has seen several military operations to clear it of insurgents - the army had previously declared the operations a success, and the area safe for the displaced to return to, our correspondent adds.
Among recent other attacks, at least 11 Pakistani soldiers and 24 militants were killed on Friday after some 150 Taliban fighters attacked five Frontier Corps checkpoints in the neighbouring Mohmand tribal region.
Earlier this month, a suicide bomb attack in Mohmand left at least 40 people dead.
A double suicide bombing in Mohmand in July killed more than 100.
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