A biker sustained serious head injuries and is in a critical condition in hospital after falling off the motorcycle he was riding in North Newbald.
The 25-year-old North Ferriby man was riding along Hull Road on 10 January at about 8.35pm,
He was riding an off road motorcycle on a track when it appears he was thrown from the machine after crashing into a hedgerow, close to the Monkton Shooting Grounds.
The rider was taken to Hull Royal Infirmary, where he remains in a serious condition.
Police are investigating the circumstances of the collision and are seeking witnesses. Call Humberside Police on 101, referring to log 581 of 10 January 2015, with information.