At least four people have died after an explosion during a class at a religious school in Pakistan.
A Police officer said children were among the dead.
Dozens of others were injured in the attack, which took place in the northern city of Peshawar.
No group has yet claimed responsibility, and an investigation has been launched.
The city of Peshawar, close to the Afghan border, has seen some of the worst of the violence during the Taliban insurgency in recent years.
Six years ago, gunmen stormed a military school in the city leaving more than 150 dead, including many children.