Perth County OPP are looking anyone who may have come into contact with a suspicious man observed at the Milt Dunnell Field in St. Marys.
The OPP were called by an alert citizen to the area also called The Flats on Saturday at about 6pm.
Police say a man was arrested for breaching a court order regarding children.
The accused had been using a white early model motor home in the park area.
John Lacroix, 47, of Stratford has been charged with failing to comply with prohibition regarding children.
Anyone with information can contact Perth County OPP by calling 1-888-310-1122 or (519) 393-6123. Should you wish to remain anonymous, call Crime Stoppers at 1-800-222-8477 (TIPS) or submit a secure web-tip at http://www.pc-crimestoppers.ca/, where you may be eligible to receive a cash reward of up to $2,000.