WA Police have issued an urgent appeal to find a 27-year-old wanted man.

Ryan John McNamara is wanted by Cannington Detectives, but the public is warned not to approach him as he may be armed.

“Members of the public are advised not to approach Mr McNamara as he may have access to a firearm,” a police spokesperson said.

“Anyone who sights Mr McNamara is advised to call police immediately on 131 444.”

Police believe Mr McNamara may be living in the Lynwood area.

The 27-year-old is described as being 172cm tall and dark skinned with a medium build.

He has brown hair and brown eyes.

Anyone with information is urged to call 131 444.