At least three suspected militants were killed in an exchange of fire between the Crime Investigation Department (CID) and militants on Thursday in the southern Pakistani city of Karachi. A senior official of CID Chaudhry Aslam said that police launched a search operation in the Mauripur graveyard upon receiving a tip-off on the suspects\' whereabouts, following which the suspected men opened fire. They belonged to the banned militant organisation Tehrik-i-Taliban Pakistan (TTP).