MANDURAH police have received reports of a man performing obscene acts in Coodanup.
A post is currently circulating on social media regarding the matter.
The author of the post claims the man was pleasuring himself in bushland on Tankerton Way.
She claimed the man asked her to perform a sex act on him.
She had her toddler son with her at the time.
The author begged local parents not to let their children walk home from Coodanup Senior College alone.
The bushland on Tankerton Way is located near the high school, parks and Mandurah Forum.
Police are investigating the matter and sent out cars to try to locate the man after midday on Wednesday.