Gunmen stormed the Pakistan Intelligence Agency headquarters throwing bombs and firing automatic weapons injuring more than 30 people according to local police.

The heavily guarded complex in the southern Sindh province had buildings collapse in the wake of the attack. Police say the offices of the Inter-Services Intelligence Agency were the main targets within the compound.

At least five people were killed although officials say the dead are attackers.

The gunmen briefly sized control of one of the government buildings and attemped to seize a second building before being drove out by security forces. Police reinforcements have been sent to the area.

While no group has claimed responsibility, the Pakistani Taliban has increased attacks in the last month after the swearing in of new Prime Minister Nawaz Sharif. Sharif has sworn to end the bloodshed and stop the Taliban.