Police are appealing to the public for help to work out how a 17-year-old Nelson fisherman got a large cut on his head in the early hours of Tuesday morning.
The teen has no recollection of what happened after he was kicked out from a licensed premises in Nelson before 2am. He was then seen wandering around Bridge St uninjured.
Workmates found him at his accommodation with the large wound about 3am.
Police located a large pool of blood in the Liquorland carpark off New Street and want to speak to anyone who may have seen the young man wandering around between 2am and 3am.