Gunmen dressed in police uniforms attacked a hospital in the eastern city of Lahore on Monday.
At least Six people were killed when they attempted to free an arrested militant being treated at the hospital, according to the Associated Press.
According to police the militant belongs to the Pakistani Taliban, and was captured when the group attacked two mosques belonging to a minority sect on Friday leaving dozens wounded. The gunmen failed to free the militant, but did manage to escape themselves. They briefly took several patients hostage, the justice minister for the region, Rana Sanaullah, told the Associated Press.
Four of the six people killed were policeman. It is the latest in a series of attacks in the region after the militant group declared war on the government and minority groups.