At least 20 people have been killed in a suicide bomb attack on the
funeral of a tribal elder in north-west Pakistan, police say.
He told the BBC some villagers at the funeral belonged to an anti-Taliban militia and may have been the target.
No group has said it carried out the bombing. The area has seen many militant attacks in the past.
Funerals of tribal leaders in the north-west have been targeted by militants before, and there have been many attacks on anti-Taliban tribal forces.
On Tuesday, gunmen ambushed a school bus near the north-western city of Peshawar, killing six. The militants claimed responsibility, saying the children were from a pro-government tribe.