The 67-year-old physical fitness enthusiast who was head-hunted from the opposition to help rein in runaway insecurity in the country died suddenly on Saturday, July 8 at the peak of his sterling career.
Mr Nkaissery collapsed at his Karen home and was taken to hospital where he was pronounced dead on arrival.
Before joining the government as minister for Interior, Mr Nkaissery was Member of Parliament for Kajiado Central constituency on an Orange Democratic Movement ticket.
He had, however, since his re-election in 2013 gravitated towards the Jubilee administration.
The ghosts of his military days haunted him as his role in some of the operations he was involved in, particularly in West Pokot, received widespread condemnation from residents who implicated him in the TJRC report.