Police have released images of two cars they want to find following the death of a pensioner who came off his mobility scooter in Keighley.
The 81-year-old man suffered fatal head injuries when he came off his scooter on Lawkholme Lane on the afternoon of February 15.
Officers believe he may have been hit by a second car while in the road.
The cars are thought to be a silver Honda Accord between 13 and 16 years old and a purple Ford Fiesta.
Senior investigator Sgt Ann Drury, of West Yorkshire Police, said: “We urgently need to speak to the occupants of these vehicles as we believe they may have information which could assist our enquiries."