Sex Assault Squad detectives are investigating after a man sexually assaulted a woman at Mullaloo Beach on Monday.
About 5am, a woman in her 40s was walking along the shared pathway adjacent to Mullaloo Beach, 300 metres north of the beach car park, when a naked man grabbed her from behind, pulled her to the ground and sexually assaulted her.
The man believed to be between the age of 18 to 25-years-old fled on foot and was last seen running south.
He is described as brown skinned, an athletic build (fit/toned not overly muscular), clean shaven and short brown hair.
Detectives would like to speak to anyone who was in the area and may have seen the man.
Anyone with any information regarding this incident is urged to contact Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au.