Kenya has arrested three top members of its Olympic committee, a Reuters witness said, after mismanagement of the contingent nearly derailed the country's participation in the Rio Games.

The east African nation notched up its biggest ever haul of medals in Brazil but doping and organizational challenges had plagued its preparations in the run-up to the event.

On Friday, chef de mission Stephen Arap Soi and assistant secretary of the National Olympic Committee of Kenya (NOC-K) James Chacha were taken to a police station in Nairobi upon arrival from the Olympics, alongside the body's Secretary General F. K. Paul, according to the witness.