Several dog owners are reporting their pets may have been poisoned at a downtown Toronto parkette Saturday, police said.

Following their investigation, police said they are concerned that some type of poison was being left at the Joel Weeks Parkette near Queen St. E. and Don Valley Parkway.

Police fear the poison is potentially harmful to children and small animals and are requesting the public’s assistance in their investigation to identifying who was responsible.

“The delivery method for the harmful substance is unknown at this time,” police said in a news release.

Anyone with information is asked to contact police at 416-808-5500, Crime Stoppers anonymously at 416-222-TIPS (8477)