The death of a man found on a Nelson boat is being treated as suspicious.
Police were called to a boat on Queen Elizabeth II Dr opposite a skate park around 10:45am on Thursday.
They've been at the scene and closed nearby roads all day and are now investigating foul play.
Investigators say the road is a main route in and out of Nelson and investigators hope people will have seen something.
"Lots of people would have driven past the scene and we'd like to hear from anyone who may have seen anything suspicious in the area overnight or this morning," Detective Inspector Paul Borrell says.
Anyone with information should call Nelson Police on (03) 546 3895 or anonymously via Crimestoppers on 0800 555 111.