Detectives investigating the death of the late Interior Cabinet Secretary Joseph Nkaissery on Sunday grilled 10 individuals who are believed to have interacted with him hours before his death.
The officers further reviewed closed-circuit television (CCTV) footage of the Bomas restaurant where Nkaissery visited on Friday night before he died hours later.
Sources close to the investigations disclosed that probe was being carried out on an informal capacity as the officers await autopsy report once a postmortem test is carried out on Nkaissery’s body.
The postmortem had been scheduled to take place on Sunday but was postponed to Monday as pathologists await his son to arrive from the United States.
Speculation is rife that the Cabinet Secretary might have succumbed out of three causes; a heart attack, embolism (a blocked artery caused by a foreign body such as a blood clot or an air bubble) or that he could have been poisoned.
Detectives have collected samples from the various places Nkaissery visited before he passed on for forensic investigation, including his office at Nyayo House, his Karen home and the Bomas restaurant.
His house help, driver and bodyguard, those who took him to the hospital and a security consultant at the Office of the President, Francis Mugambi are some of the individuals who have so far been questioned.
A number of officers at Karen Hospital including Dr. James Mageria, who confirmed Nkaissery’s death, have also recorded statements with the detectives. Others are four waiters at the hotel who served him a meal and a glass of light wine.
“We want to know who he talked to, met and the kind of interaction they had at the restaurant and other places,” said an official aware of the probe told the Standard.
Mugambi, a friend of Nkaissery for the past 43 years told Citizen TV that he was with him on Friday night at the Bomas of Kenya Lounge and left at around 8.45pm, but received news of his illness at 12:30 am, Saturday.
“At around 1am, the doctor who attended to the CS told us there was nothing they could do as the CS had already died,” said Mugambi.