Plain-clothes policemen display seized weapons and ammunitions in the southern Pakistani port city of Karachi on Jan. 19, 2013. Criminal Investigation Department (CID) officials on Saturday arrested two suspect militants and seized a heavy amount of weapons and ammunitions during a massive operation in Karachi, local media reported. (Xinhua/Masroor)

Plain-clothes policemen hold hand grenades seized from suspect militants in the southern Pakistani port city of Karachi on Jan. 19, 2013. Criminal Investigation Department (CID) officials on Saturday arrested two suspect militants and seized a heavy amount of weapons and ammunitions during a massive operation in Karachi, local media reported. (Xinhua/Masroor)