Residents woke up to smashed tail lights, broken side mirrors and other damage to their vehicles in at least seven Red Deer neighbourhoods on Friday.
At least 40 vehicles were targeted in north Red Deer in the Johnstone Crossing, Glendale and Normandeau neighbourhoods.
Red Deer RCMP are still tallying reports of damage in Timberstone, Eastview, Clearview and Rosedale.
Police have no suspects or witnesses.
Anyone with information is asked to call the Red Deer City RCMP at 403-343-5575. To remain anonymous, call Crime Stoppers at 1-800-222-8477 or report it online at www.tipsubmit.com.