Police are investigating a report about two seven-year-old girls being approached by a man at Cabramatta on Saturday.
About 2pm, the children were playing at a sports oval on Sussex Street.
They told police a man stepped out from behind a toilet block and beckoned them to come and speak with him.
The mother of one of the girls was sitting on the opposite side of the oval with another child.
The girls ran to her and told her about the man.
Police were contacted and officers from Cabramatta Local Area Command are now investigating the incident.
They would like to speak with a man who may be able to assist with their inquiries.
The man is described only as wearing all black clothing, including a hooded jumper.
Police were told he was wearing sunglasses and a face covering.
Anyone with information about this incident should call Crime Stoppers on 1800 333 000.