KARACHI - Security agencies picked up three target killers involved in the killing of ANP workers, from Superhighway, here on Thursday. Police sources said that police and Rangers in a joint operation arrested three criminals involved in the killing of various persons including the ANP workers, who were gunned down last week in Pehelwan Goth areas of Gulistan-e-Juhar. The police said that the accused were trying to leave the city when security agencies picked them up and taken to some unknown place.