Police claim the death of Evans Kiplagat Chirchir, a procurement intern at the National Treasury was caused by a hit-and-run.
Chirchir went missing on Saturday night and his body was found at the Machakos Level 5 Hospital mortuary on Wednesday.
An autopsy conducted at Machakos Funeral Home revealed that Chirchir died from head and back injuries, as well as broken legs.
Police says he was hit a motorist driving a black Toyota harrier (KCJ 410J) at Maanzoni area on the Nairobi-Mombasa Highway.
The vehicle was identified from debris and glass fragments of its side mirror found at the accident scene.
The driver implicated in the accident was later arrested but freed on a Sh50,000 bond. His vehicle was also processed and released after an NTSA inspection report.
He is scheduled to appear in court in two weeks where he will be charged with dangerous driving, causing death, and failing to report an accident.