Pakistan Stock Exchange building in Karachi was attacked by armed men on Monday. 4 terrorists were killed in the gunfight. At least six other people also lost their lives in the attack. Four security guards, a policeman and a bystander were also killed, the Karachi Police said. Pakistani journalists tweeted eyewitness videos in which intense firing can be heard in the stock exchange. The building is situated in Karachi's high security main district and is at walking distance from provincial police headquarters.