At least 24 people have been killed in a car bombing near the offices of Pakistan's main intelligence agency in the eastern city of Faisalabad.
The Taliban claimed responsibility for the blast, which also injured more than 125 people.
A Taliban spokesman said the group was targeting the Inter-Services Intelligence agency, or ISI, in retaliation for the killing of a Taliban commander in the city.
The car bomb ignited gas cylinders at a nearby service station, triggering an even bigger blast that damaged several buildings, including an office of Pakistan's state airline.
Piles of bricks from the destroyed service station and scraps of metal from damaged cars littered the scene as rescue workers pulled victims from the rubble.
Faisalabad is home to Pakistan's textile industry.
Raw Video clip: Pakistan car bomb
Some information for this report was provided by AP and AFP.