
Security forces killed four gunmen who attempted to storm the Pakistan Stock Exchange building in Karachi on Monday. Four security guards, a police sub-inspector and a civilian were also killed in the attack. In pic: This image shows the exterior of stock exchange building in Karachi, Pakistan. (AP)

Three police officials have also been injured, The Dawn reported. In pic: Police officers survey a damaged car at the site of an attack at the Pakistan Stock Exchange entrance in Karachi. (REUTERS)

The gunmen, according to The Dawn, stepped out of a vehicle and lobbed grenades before entering the stock exchange premises. In pic: Security personnel surround the Stock Exchange Building in Karachi. (AP)

AK-47 rifles, hand grenades, magazines and other explosive material have been recovered, the police said, adding that the equipment indicated that they had come for a long siege. (AP)

The building, which is in a high-security zone, also houses the head offices of many private banks. In pic: Paramilitary soldiers arrive at the Pakistan Stock Exchange in Karachi (REUTERS)

Karachi police chief Ghulam Nabi Memon told Reuters that they exchanged gunfire with security personnel. (AP)