Pre-Planned Islamic attacks on the business holds of the Hindu, Sikh and Christian groups now took 22 lives in Faisalabad CNG refueling station.
Three buildings and 10 cars have also been destroyed by the explosion.
An office of the Pakistan International Airlines (PIA) and a local gas station were severely damaged in the blast, AP reported.
Senior government official Naseem Sadiq said explosives were planted in a vehicle parked at the gas station, which also lies near police offices as well as the PIA building.
Regional police chief Aftab Cheema confirmed the attack in Faisalabad, the country’s textile-making capital.
“It was a car bomb blast. The explosive was planted in a car. We are investigating whether a suicide bomber was involved or not,” Cheema said.
Television pictures showed the station had been reduced to a pile of bricks and gnarled metal as rescue officials worked to remove rubble from the scene to search for survivors and ambulance vehicles ferried the injured away.
City commissioner Tahir Husain told a private television channel that rescue officials were heaving bricks and metal away to save those trapped.
“There are some people trapped under the building rubble. We have deployed our cranes and machinery to rescue them very soon,” he added.
Husain told a private television channel that no suicide attacker was involved.