At least eleven people were killed and dozens wounded when a bomb exploded in a house in Pakistan used for teaching Koranic lessons to children, police said. More than a dozen mud-built houses collapsed after the powerful explosion shook a village near Mian Channu in Punjab province. It appears that the blast was caused by some explosives placed inside the house, said Kamran Khan, police chief of the area. A doctor at the towns hospital said at least 70 people were wounded.