Detectives are hunting for a man behind a string of violent robberies of men he has targeted through a gay dating app.
Police say he has struck at least three times and in the most recent attack the violence escalated with the man threatening his victim with a machete.
All three robberies have happened in the Auckland suburb of Mt Albert after hook-ups secured via the gay dating app Grindr.
Detective Constable Laura Hadwen said police believed all three were carried out by the same man.