PARENTS in the Dianella area are being urged to be vigilant, after a male was seen acting suspiciously at the Sutherland Dianella Primary School on Wednesday.
The man was a Caucasian and was wearing jeans and a black hoodie.
He was last seen walking down Howes Crescent in Dianella.
One other primary school in the area sent a note home to parents, asking them to be vigilant and listing suggestions to help keep their children safe.
A spokesman from the Morley police station said a sergeant from the Dianella local policing team would be attending the Sutherland Dianella Primary School next week to speak to students in relation to the matter.
Anyone who wants to report anything suspicious is urged to contact police on 131 444 or Crime Stoppers on 1800 333 000.