PERTH police have released a composite image of a man wanted over a terrifying assault on a woman in Wanneroo.
About 8.30pm on Saturday November 3 a woman aged in her 20s was walking her dog on Paltara Way when a man approached her from behind.
He placed his hand over her mouth and, while holding her, he searched her pockets.
The woman was able to break free, and the man walked away.
He was described as 35-40 years of age, with a stocky build, brown skin, approximately 170cms tall with a thin moustache.
The man was wearing a light grey tracksuit with a dark coloured logo on the front of the top, and a grey beanie.
Detectives would like to speak to the person pictured, who they believe can assist them with their investigation.
Anyone with any information relating to this incident is urged to call Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au.