The Internet statement said a member of Tehrik-i-Taliban Penjab in Lahore loaded his truck with 100kg of explosives and drove it into a building belonging to a Pakistani security and intelligence agency building. The statement said the attack comes in response to the military operation launched against the Taliban in the Swat valley.
The group called the attack a "humble gift to the mujahideen who suffer under the strikes of Pakistani forces in Swat valley."
The group also warned that there will be similar attacks to come. "We call upon all Muslims in Pakistan to stay away from areas where the enemy is present, so that they are not be harmed by jihadi attacks," said the statement.