Mandurah detectives are investigating reports of suspicious behaviour within the Lakelands area.
It is believed to have happened at around 7.20pm on Monday November 11 on Yindanna Boulevard and around 6.30pm Thursday November 14 on Albina Chase.
Police have received information regarding a male person approaching children in the area.
He is believed to be driving a blue utility.
Detectives request anyone with dashcam footage or CCTV within the area of the park on the corner of Yindanna Boulevard and Nullewa Parkway and also the vicinity of Albina Chase, Lakelands to contact Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au.
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