The body of six-year-old Zainab was found in a refuse dump on Tuesday, a few days after she disappeared. She had been assaulted and choked.
Furious demonstrators say the specialists are doing little to stem the spate of kidnappings, rapes and killings.
Police in Kasur say there have been 12 comparable murders in the previous two years.
They say five of them are connected to one presume who is being chased by many officers and DNA tests have been taken from 90 conceivable suspects.
The two dissenters were slaughtered after police shot at a furious group endeavoring to storm a police home office in Kasur, around 20km (12 miles) south of Lahore.
Zainab's murder has started shock over whatever remains of Pakistan. Surely understood film and cricket stars requested the executioner be gotten and the military offered support to the police.
Zainab disappeared on her way to a Koran presentation. Her body was found around 2km from her home.
Be that as it may, Zainab's family say the police did not make a move after they revealed her vanishing and it was relatives who recouped CCTV film of Zainab's developments previously she vanished, not the police.
The recording demonstrating a young lady being driven by the hand by a man was coursed broadly via web-based networking media.
"On the off chance that the police would have acted instantly, the offender would have been gotten," Zainab's dad disclosed to Geo TV as he touched base back in the capital Islamabad from Saudi Arabia, where he had been on a journey.
Police say comparative episodes give off an impression of being occurring in Kasur each other month.
A month ago, a nine-year-old young lady disappeared in the downtown area in the wake of setting off to the shops close to her home. She figured out how to get away from her captor and return home however has been left seriously damaged by her experience, reports say.
Zainab's murder has prompted boundless outrage via web-based networking media, where the hashtag #JusticeforZainab was one of the best drifting points around the world.
