A motorcyclist has been flown to Southampton for medical treatment.
It follows a crash near Longbeach car park in Grouville on 16 February.
A car and motorbike collided at around 1:30 pm.
The police say the person on the motorcycle has 'serious injuries'.
States of Jersey Police would like any witnesses or people with CCTV or dashcam footage from the time to contact them on 612612 and refer to M01160/2025.
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