Kenya National Union of Nurses secretary general Seth Panyako wants the probe into the death of a Kisii Teaching and Referral Hospital nurse hastened.
The nurse was found dead in his apartment last week.
Panyako accused security agents in the region of dragging their feet in unraveling the mystery surrounding the death of Clinton Onsase, 28.
Health officials at the hospital said the nurse was found on the bathroom floor dead and bleeding from injuries on the body.
Family members have been calling for a probe into his death to establish how it happened.
Speaking at Onsase's burial on Tuesday, Panyako said the family was in pain as they awaited the investigations conclusion.
He accused the hospital management of tormenting the family by failing to give them adequate information.
"As nurses, all we want is speedy investigations into his death so that the family can get closure," Panyako said.
Edwin Onsase, the deceased's brother said an autopsy report was not convincing and thus the need for enhanced investigations.
"There were grey areas that need to be addressed and this can be possible with the aid of homicide detectives," he said at the burial in Suneka, Bonchari, Kisii.
He said the body was hurriedly put in mortuary before postmortem was done.
An autopsy report showed the deceased had bruises to the left leg above the knee.
Separately, Panyako asked Kisii Governor James Ongwae to reinstate dozens of health workers he had suspended.
At least 80 health workers were shown the door at the height of an industrial strike eight months ago.
Constant appeals for reinstatement have fallen on deaf ears.
Panyako described the move by the administration to kick out the health staff from service as inhuman.
"At a time in the history of a country when the focus is improving health care services, we should not be sacking health workers unnecessarily," he added.
Edited by SKanyara
