Police and the Independent Policing Oversight Authority are investigating the death of a man who had been arrested and booked at the Kamukunji cells, in Nairobi.
Boniface Mutembei had been booked over claims of disorderly conduct in the area.
He was arrested on May 29 night on the streets and later booked in the cells.
Other cellmates had told the officers at the report office the deceased was complaining he was sick.
On Thursday morning, Mutembei is said to have collapsed in the cells.
This was after he reportedly convulsed and started to experience epileptic seizures.
The other cellmates shouted for help and police on duty rushed into the cells where they found him lying down unconscious but breathing.
He was rushed to Kenyatta National Hospital where he was pronounced dead.
The body was moved to the mortuary pending autopsy and other investigations.
Nairobi police boss Adamson Bungei said they are investigating the incident, which he termed unfortunate.
“That is a life lost and we will establish what happened and why,” he said.
IPOA has been informed of the incident and has joined the probe.
They will among others grill the cellmates who were present, the police on duty and the family of the deceased.
In Yatta, Machakos, police are investigating the death of a man whose body was found floating in River Athi.
The body was found in Kathithu village and taken to a local mortuary.
In the same area, the body of Joseph Ngao Muli was found lying near his home.
Police found a lifeless body, which had no visible injuries and moved it to the mortuary pending autopsy and other investigations.
The cause of the death of the man is yet to be known.