Ranges in early hours of Friday conducted a search operation in Moosa Colony area of Karachi and rounded up ten suspects.
The search operation was initiated to find the culprits of Azizabad incident which claimed lives of three policemen.
Rangers spokesperson claimed that important revelations are expected from the arrestees.
On the other hand, police killed two militants in an alleged encounter in Mianwali Colony of Manghopir area recovering two pistols and a hand grenade from the dead.
Police sources claim that the militants belong to a banned outfit.
Rangers and police have intensified operation in Karachi city arresting several target killers, extortionists, kidnappers along with other criminals.