Woodstock Police are on the lookout for vandals following a graffiti spree in the city. It happened overnight Friday when the exterior walls and playground equipment at St Patrick's School and Southside Public School as well as several vehicle and homes were spray painted with graffiti. No damage estimate has been set yet. Anyone with information is asked to come forward and call Woodstock Police at 519-537-2323 or Crime Stoppers at 421-TIPS.