Kenyatta National Hospital CEO Lily Koros was on Friday sent on compulsory leave.

Health CS Sicily Kariuki announced the decision following the incident where doctors at the hospital performed a brain surgery on a wrong patient.

"I apologise over patient mix-up at KNH, I have directed that KNH CEO be sent on compulsory leave until the probe is over," the Cabinet Secretary said.

Koros and an officer in charge of clinical affairs were sent home to pave way for investigations.

Sicily said a Dr Mutei and John Ong'ech will take over and run the institution as investigations continue.

"I wish to pronounce myself that they are both competent professional and they will support the board," she said.