Three people were taken to hospital after a serious two-vehicle crash near Pentraeth.
The A5025 was closed following the head-on collision at around 9.10pm on Tuesday night (4th June) – it was reopened almost six hours later at around 3am.
The three casaulties were taken by ambulance to Ysbyty Gwynedd in Bangor to be assessed – their condition is unknown.
Police have appealed for anyone who may have seen a black Ford Focus car being driven from Pentraeth just before the crash.
Anyone with information should call 101, quoting reference no. X077477.