A senior policeman was shot and seriously injured in Parklands, Nairobi Friday.
Gunmen riding on motorcycles shot Parklands Police Station commander Job Njiru and a businessman on Friday night.
The businessman was also robbed of USD26,000 (Sh2.2m) and three laptops.
Gigiri OCPD Vitalis Otieno said that about 12 men riding on four motorbikes raided Rich Court in Parklands at around 8pm and held the watchman hostage and lay in wait for the owner of the residence to arrive.
The man, an Asian, was robbed before being shot on the leg.
Chief Inspector Njiru was on night patrol with another officer using an unmarked vehicle on Ojijo Road, about 200 metres from the station.
They met one group of the attackers, three of them on a motorcycle, riding towards the city centre.
The officers challenged them to stop but one of them shot at the officers.
The OCS was shot on the left arm and on the hip. The gunman also fired other shots shattering the front and rear windscreens of the officers' car.
A major manhunt has been launched in the city and its environs for the attackers.
Police say gunmen prefer motorbikes since they can escape easily from scenes of crime.