"The blast took place inside the house of a local cleric. Children used to come to his house for religious education," local district police chief Kamran Khan was quoted as saying in a news agency report.
According to news reports, at least 50 people have been injured and many people are still trapped under the rubble. Rescue operations have been started off.
"Rescue teams have recovered nine dead bodies. Dozens are injured. The blast was apparently due to some type of explosives inside the house," Khan added.
A local hospital authorities have confirmed the death toll. But the police authorities are still unclear as to why the explosives detonated.