Three mutilated bodies were found Saturday stuffed into a burlap bag and dumped in a western suburb as a warning to would-be police informers.
Police said the bodies were all accompanied by notes identifying them as informers and warning others against collaborating with authorities.
The slaughter of alleged informers has risen dramatically since July, when police began an operation to flush ethnic militants out of Karachi’s violent western and central neighborhoods, police said.
They said at least 20 bodies have been found in the past month accompanied by notes identifying them as police collaborators.
Police blame the largest faction of the Mohajir Qaumi Movement, the most powerful political force in Karachi, for the ethnic violence in which more than 700 people have been killed in the past three months.