Two decomposing bodies of a boy and a girl have been recovered inside a car at the Athi river police station.
According to police boss Catherine Ringera, the two children had been reported missing on June 11.
The two aged four years were last seen playing outside their house in KMC estate.
Athi river police station where the matter was reported had extended their search to hospitals and mortuaries until Tuesday afternoon when the bodies were found.
Sources indicate that the bodies were found by a man who had gone to the station to pick up his car –a Toyota belta –which had been seized after an accident.
The Nairobi-based businessman alerted the officers about a foul smell coming from the trunk of his car.
When the trunk was opened, the bodies of the two minors were found stashed inside a black paper bag.
Later, the two bodies were taken to the Chiromo mortuary after their parents identified them as Elvina Mutheu and Henry Jackton.
A combined team of homicide and forensics detectives has since been deployed to investigate the matter.
According to experts dealing with the incident, there were no bloodstains in the car amid questions on how officers at the station had not picked the foul smell from the decaying bodies. An officer who towed the car on May 1 has since logged a statement over the matter and noted the vehicle was locked when he moved it.