- The fourth victim was not examined, as it was only a skeleton.
- The probe will seek to establish if the boys were sodomised before being killed.
A postmortem report shows that teenagers who were kidnapped and later murdered by a confessed killer were strangled and hit on the head with a blunt object.
It says Brian Omondi and Junior Mutuku were strangled, while Charles Were Opindo suffered head injuries inflicted with a blunt object. The fourth victim was not examined, as it was only a skeleton.
Chief government pathologist Johansen Oduor conducted the necropsies at the City Mortuary on Thursday. He said the process of identifying the fourth male victim would take time.
Omondi's parents could not identify his body as it had badly decomposed, prompting the authorities to take their samples for DNA tests.
The probe will also seek to establish if the boys were sodomised before being killed. Three of the bodies were collected from the Kabete area of Kiambu county, while the fourth, the skeleton, was found in a manhole in the Pumwani area of Nairobi.
There were emotional moments at the mortuary when a man appeared, saying his daughter, aged eight, has been missing since February and he suspects she is a victim of the killer, 25-year-old Masten Milimo Wanjala.
Wanjala and his cousin have been arrested for the killings. This comes as police continue to search for more bodies of teenagers missing after their abduction and murder by Wanjala. Police were on July 15 allowed by a court to hold Wanjala for 30 days.
Wanjala claims he kidnapped and killed at least 12 children in four years in Nairobi, Machakos and Bungoma. Only four bodies have been recovered.
Wanjala says he lured his victims and killed them in cold blood before dumping the bodies at various places.
Police on Monday visited three sites in the Pumwani area where he says he dumped more bodies but no more recovery was made.
Wanjala has been playing with among others, Young Elephants, a football club with about 80 boys based in Majengo area, Nairobi.
On his Facebook page, he has several photographs of himself on happier days with young footballers and trainers, including Kinyago Football Club where Mutuku, one of his victims, played.
Police said they expected him to take them to various places, including Machakos and western Kenya where he is believed to have dumped some of his victims.
Wanjala claims he single-handedly massacred his victims in the most callous manner, sometimes through sucking blood from their veins before executing them.
He provided the police with a book in which he documented his executions. After luring his targets to secluded places, he first stupefied them with a chemical before killing them and sucking their blood, he said.
Detectives have further established that all the murder victims were stupefied using a white substance in powder and liquid form, which the victims were forced to drink or sprayed with before being executed.
Global children’s agency Unicef has condemned the kidnap and murder of the children and called for those responsible to be held to account, and additional measures to protect children.
Former Prime Minister Raila Odinga too called on the authorities to take measures to tame the trend.