A postmortem on the three bodies of teenagers who were kidnapped and later murdered by a confessed killer shows they were strangled and hit in the head with a blunt object.
The postmortem showed Brian Omondi and Junior Mutuku died of strangulation while Charles Opindo had a head injury inflicted by a blunt object.
The autopsy on a fourth victim was not done because it was a skeleton.
Chief government pathologist Johansen Oduor conducted the exercise at the City Mortuary on Thursday.
He said the process of identifying the fourth male victim would be long.
The parents of Omondi could not identify him positively because it was badly decomposed, making authorities to take their samples for further tests and analysis.
The probe will also seek to find out if the boys were sodomised before being killed.
Three of the bodies were collected from Kabete area, Kiambu County while the fourth which is a skeleton was found in a manhole in Pumwani.
There were emotional moments at the mortuary when a man appeared, saying his daughter who was eight years has been missing since February and he suspects she is a victim of the killer Masten Wanjala.
This comes as police continue to search for more bodies of teenagers missing after their abduction and murder by Wanjala, 25.
Police were on July 15 allowed by a court to hold him for 30 days.
Wanjala claims he kidnapped and killed at least 12 children in four years in Nairobi, Machakos and Bungoma counties.
So far, four bodies have been recovered.
Wanjala and his cousin were arrested over the killings.
Wanjala said he lured his victims and killed them before dumping the bodies at various places.