Police are warning dog walkers to be wary after a suspicious substance was found in Oakvale Green Park (Trevor Dunn/CBC)

Police are warning the public after an unknown substance was found mixed with hot dogs in an east-end park.

Police say a citizen found the substance on Monday in Oakvale Community Gardens, located off Greenwood Avenue  south of Danforth Avenue.

Police searched the area and didn’t find any other suspicious substances.

Police are asking people in the area to remain aware and report any similar substances to police.  

They also recommend that pets be kept on a leash.

Police also say anyone who spots a suspicious substance should not collect it or touch it but call police.