A man was dragged for around 25 metres down Regan street in Rockingham.
Police are seeking the public's help in relation to a hit and run crash in Rockingham.
Around one o'clock yesterday morning a 45 year old man was struck by a white vehicle on Regan Street.
It's understood he was dragged by the car for about 25 metres before the car came to a stop.
It's also believed the female driver got out of the car and spoke to the injured man before getting back into the car and driving away.
The man remains in Royal Perth Hospital in a serious but stable condition.
Anyone with information should call Crime Stoppers on 1800 333 000