A DOG walker has expressed alarm after finding dumped laughing gas canisters during a morning walk.

Sean Gibbons says he saw the canisters on a field near to The Shires today (Wednesday) during a morning stroll.

Sean took to social media to share photographs of the canisters.

He said: "Is this all the go now is it? All found on my dog walk this morning on the field behind The Shires".

Other residents have reported seeing canisters around the area over recent weeks, including at Albert fellows park in Rainhill.