Police have started a probe over the sudden death of Interior and Coordination Cabinet Secretary Joseph Nkaissery.

At least ten individuals who were in contact with Mr. Nkaissery during his last moments are already being informally questioned by the police in a bid to establish what led to his abrupt death.

Director of Criminal Investigations Ndegwa Muhoro on Sunday divulged that: "According to the Criminal Procedure Code, sudden death must be investigated, even if it was sicknesses or accident".

According to emerging reports, four barmen who served the Maj- General (Rtd) at Bomas of Kenya restaurant on the night of his demise have been questioned.

At the lounge, Nkaissery is said to have taken a light meal and wine.

Six of his bodyguards have also been asked by the police to recount their last moments with the no-nonsense CS.

Also on the questioning list was the house help, driver, and bodyguard who took Nkaissery to the hospital when he suddenly collapsed at his Karen home last week.

Detectives are also scrutinizing the CCTV footage of the places where the minister in his last hours.

The restaurant has also been sealed off.

"We want to know who he talked to, met and the kind of interaction they had at the restaurant and other places," an official was quoted by the Standard as saying.

Read Also: The Last Thing Nkaissery Did Before his Death

Nkaissery's postmortem is expected to be conducted on Monday.

Commenting on the matter Mr. Muhoro mentioned: “We are looking into it but the postmortem will determine the direction of the investigations. The law requires that sudden death must be investigated".

He added: "Not that we suspect anything, but we have to deal with the law. Any person who had contact with him must be questioned. Naturally, that is the course of the investigation".

Read Also: Nkaissery's Wife Rushed to Hospital