Britain has condemned a suicide bomb attack which killed at least 88 people at a volleyball tournament in Pakistan.
The blast was the latest in a series of reprisal attacks which have killed more than 500 people in the country since its army launched a military offensive against the Taliban in the South Waziristan tribal region in October.
Local police said Friday's bombing in Lakki Marwat city, not far from South Waziristan, may have come in retaliation for local residents' efforts to keep militants out of the area.
In a statement issued in London, the Foreign Office said: "We condemn this horrific attack that has led to the needless loss of so many lives. Our thoughts are with the families of those who have lost their lives or who have been injured.
"We will continue to work with Pakistan to counter the threat that it faces from violent extremism.
"It is a threat that the international community must help Pakistan to tackle, in the interests both of Pakistan's people and of wider stability."
