A suicide car bomber Monday struck a building where police interrogate high-value suspects in Pakistan's eastern city of Lahore, killing at least 12 people and wounding 61 more including women taking children to school, officials said. No group immediately claimed responsibility, according to a report of the Associated Press. The explosion went off outside a Punjab province police building, police official Zulfikar Hameed said. TV footage showed a huge crater in the ground where the blast originated. It appeared the suicide bomber rammed a car packed with as much as 1,300 pounds (600 kilograms) of explosives into the building's perimeter wall, officials said. «This place was used to interrogate important suspects, but presently there was no such suspect, but more than 40 staff were manning the place,» Lahore police chief Pervez Rathore said.