Queenstown police are warning of a serial masturbator in the resort.
Sergeant Steve Watt said the man had been seen by residents and tourists performing an "indecent act" beside popular walking and running trails on Queenstown Hill and the Matakauri Wetland track by Gorge Rd.
Sgt Watt said walkers and joggers should not go out alone, and asked them to report any sightings immediately.
The police had received four complaints about the man’s behaviour in the past fortnight, with the most recent sighting on Monday. There had been "plenty of witnesses" to the offending, which was usually occurring in the early afternoon.
"We have extremely strong leads and we’re following up on those."
Although similar offending had occurred in the resort before, such incidents were "very, very few and far between", Sgt Watt said.
A Queenstown woman said in a social media post on Monday night she was walking on the track beside Gorge Rd about noon that day when she saw a "strange man" sitting on the track performing an indecent act.
"He saw me and carried on.
"I ran for the road."