Lawrence Warunge is the prime suspect in the murders of four family members and a farmhand in Kiambu.
He confessed to police how he planned to kill his entire family.
Lawrence told Police detectives that he killed the five alone; but police said they are open to a possibility there were other players.
The most chilling part is where Lawrence said he caught up with his father, Nicholas Njenga Warunge, as he escaped from him after he broke one of his legs after jumping off a balcony.
“He says the father was hit by an electric cable as he ran away and jumped off the balcony and was indisposed further after he fractured a leg. This gave him time to catch up with him and kill him like a snake,” said an officer who had heard the confession.
The father’s body had 34 stab wounds.
Lawrence’s girlfriend, who lived in Mai Mahiu, is also in custody .
Lawrence said after he murdered the five using a kitchen knife at about 8pm he jumped onto a motorcycle and rode up to the nearby Wangige shopping centre where he took a public service vehicle to Mai Mahiu while carrying the killer weapon and other recovered evidence.
The boda boda rider is yet to be found for questioning.
In his chilling confession, he said on arrival at Mai Mahiu, he went to an open field where he burnt some of the evidence on Tuesday, January 5, at about 11pm.
Detectives from the Homicide Unit visited the site and collected the debris for analysis.
Lawrence told police that his parents were “satanic and killers” hence deserved to die.
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Lawrence is a university student in the city and was initially thought to have gone to school.
His mobile phone signal was traced to Mai Mahiu, Naivasha. It was later traced to Thika and later to Kabete on Friday.
Police said the suspect went to a relative’s home in Ngongoro to seek refuge there before they were alerted Friday night.
Police had thought at least five people were involved in the murder of Nicholas Njoroge Warunge, his wife Annie, sons Christian and Maxwell and a construction worker, James Kinyanjui.
Their badly mutilated bodies were found in their Kiambaa home on Tuesday and Wednesday.
Warunge had arrived in Kenya from the USA where he worked as a nurse for Christmas holidays about 11 days before his murder.
His two elder daughters survived the coldblood murder because they had gone to school the previous day.
Annie, who worked with Kiambu County Government as a psychologist nurse, and two of their children, were found murdered and the bodies lying in the compoun