An Otago man who has been missing for almost a year is now believed to have been the victim of a homicide, police say.
Simon Garrick, 42, has not been seen since October 2012, and has been officially reported as missing since May.
However, police now believe Mr Garrick - a known heavy drug user - may no longer be alive, and have appealed to criminal or drug associates to come forward.
"It is no secret that Simon has been involved within the Otago criminal fraternity and has been a known heavy drug user," Detective Sergeant Derek Shaw of the Southern Police said.
"I believe that the key to solving the mystery of his disappearance lies with members in this group and I appeal to anyone who has knowledge of what happened to Simon to come forward.