Islamabad, July 13 - Nine people were killed and over 50 people were injured Monday in an explosion in Mian Channu city of Pakistan's Punjab province, an official said.

Naeem, a doctor at the tehsil headquarter hospital, told Geo TV that nine people were killed.

According to reports, the blast took place in a house where children gathered to get religious education.

Several houses were destroyed in the blast that formed a huge crater.

'More than 50 people were rushed to hospital among which 12 were reported to be in a critical condition,' the report cited police sources as saying.