The hitman in Idriss Mukhtar's shooting took his own life while in police custody, authorities have maintained.
A video of the police explaining the alleged suicide has emerged online with the officers attempting to explain the happenings before and after Mwai's death.
Police spokesman Charles Owino in the video illustrates how David Mwai reportedly hanged himself at Parklands police cells.
The police hold that Mwai who had been suspected to have been hired to kill Idriss took his own life next to the toilets used by inmates at the station.
Mwai is said to have stepped on a bucket and hanged himself using his jacket lining. The details only add more intrigues into the probe that put Garissa Governor Ali Korane on the spot.
"When he came, he had a jacket, inside the jacket, there is a lining so he removed it and there was a jerrican for storing water here. He stepped on it and hanged himself,"
Owino stated that the Parklands OCS and two constables at the police station removed Mwai from the scene while still alive.
He, however, indicated that they took photos of him hanging at the scene.
"It is in our photos, you know before we remove the body, we must photograph," explained Owino in the video seen by Kenyans.co.ke.
Constable Kennedy Njuguna and Sikukuu Galgalo who were manning the report desk located just next to the cells had in an internal communique stated that Mwai had tried to hang himself using one of the pipes that connect to a toilet water tank at 12.18pm on Thursday.
With the explanations and records in the Parklands Police Station Occurrence Book number 32/30/8/2018, the alleged suicide remains more questionable.
It will be now left to the police to explain why they had photographed Mwai taking his own life before attempting to save him as stated by the police spokesman Charles Owino in the video.