Police are hunting a man believed to be involved in a sexual assault at the University of Western Australia.
The incident happened in a toilet block on the campus around 8.30am on Saturday.
The man is described as being aged in his 30s and wearing a red striped hooded top and dark pants.
He was last seen on Stirling Highway walking in the direction of Hampden Road, Crawley.
Police would like anyone with information to call Crime Stoppers on 1800 333 000 or make a report online at crimestopperswa.com.au.
Anyone that sees a man matching this description is asked to call police immediately on 131 444.

Homeless campers on Memorial Drive given 24 hours to vacate
Women injured in serious North Dandalup crash
Daughter of man allegedly stabbed to death in East Rockingham pays tribute to father
Peel Thunder claim fourth WAFL premiership
Man dies after suspected stabbing in East Rockingham
City of Rockingham cracks down on illegal dumpers
Missing Mandurah girl found safe and well
Police hunt for man who threatened staff with knife during Falcon armed robbery
Authorities descend on Memorial Drive homeless camp, move on notices issued