Investigators and police officers have intensified their search for the bodies of three people, 18 days after a helicopter they were travelling in crashed in Lake Nakuru.

National Disaster Operation Centre desk officer Jonathan Kertich said the team had intensified its search along the shores of the lake.

Mr Kertich said the major challenge had been locating the exact position of debris of the helicopter. 

He said the patrol would be concentrated on the northern part of the lake, where some debris from the helicopter was recovered.