A man has been questioned by detectives following a hit-and-run crash in Caernarfon.
The car fled the scene and was found badly damaged on Lon Eilian a short time later.
Police said a man was arrested on suspicion of several driving offences – he has been released on bail but remains under investigation.
One man was taken to a specialist trauma unit at the Royal Stoke University Hospital after the crash – while another was taken to Ysbyty Gwynedd in Bangor.
Anyone with information about the crash should contact the Roads Policing Unit on 101, quoting reference no. X170291.