In the early hours of today (Friday), police received a report of a collision involving a grey Volkswagen Jetta and a male on Great Horton Road in Bradford.
The car was reported to have left the scene and driven off towards Wakefield Road.
Officers attended and found a blue Toyota Yaris which appeared to have been abandoned.
Enquiries are continuing into the circumstances of this incident and two men have been arrested.
Great Horton Road remains closed near to its junctions with Shearbridge Road and Laisteridge Lane.
These closures are expected to remain in place for the next few hours and motorists are advised to find an alternative route.
Anyone with information is asked to call 101. The log reference is 131 of 7 February.