New information about a Nelson man who went missing more than three years ago suggests his disappearance may be suspicious.
A tip-off from the public has led police to believe "another person's actions'' resulted in 19-year-old Leo Lipp-Neighbours' disappearance.
Mr Lipp-Neighbours was last seen in Watson Street, Nelson on Sunday, January 24, 2010.
Neither he, nor his distinctive orange Toyota Corolla Station Wagon, has been seen since.
An investigation team has spent the past 10 months reviewing all aspects of the teens disappearance. Detective Sergeant Mark Kaveney said the "constant trickle of information from the public'' had built a picture which points to suspicious circumstances.