Gunmen attacked an office of the security force's intelligence agency in northwest Pakistan Monday, taking several hostages and reportedly killing at least one officer, police said. The attack took place in the city of Bannu, just outside of North Waziristan in Pakistan's rugged tribal region near the border with Afghanistan. Police official Zeenatullah Khan said police have cordoned off the building and exchanged fire with the attackers. Reports coming to police from inside the building indicate one of the officers has been killed, Zeenatullah said. The attack started around 8 a.m., and the fighting was still underway around noon local time, according to a report of the Associated Press.