Kitui West MP and former Minority Leader Francis Nyenze has passed on.
Mr Nyenze died on Wednesday at The Nairobi Hospital, according to Kitui Senator Enoch Wambua.
The body has been moved to Lee Funeral Home in Nairobi.
On August 31, Mr Nyenze carried an oxygen tank into the National Assembly for his swearing-in.
He arrived at about 10am, with the tank strapped on the body and the tubes snaking up his back.
He looked frail and was limping but put on a brave face and greeted the battery of journalists at the entrance.
He said: “How are you friends…mimi pia nimefika (I’ve also made it) for the swearing-in.”
He hugged and cheerfully greeted his colleagues inside and took the oath.
Mr Nyenze, Kanu-era Cabinet minister, successfully defended his Kitui West seat on a Wiper Democratic Movement party ticket in the August 8 General Election.
Born on June 2, 1957, Mr Nyenze was a close ally of Wiper party leader Kalonzo Musyoka.
However, he touched off a political firestorm in Ukambani when he and former Kitui Senator David Musila endorsed the re-election of President Uhuru Kenyatta.