#UPDATE: Mr. Ridley has been located. Thank you. The Lisbon Police Department has issued a Silver Alert for John Ridley, 82, of Lisbon who was last seen on Monday, June 14, 2021 around 10:00am near Ridlon Rd. in Lisbon. It is not uncommon for Ridley to take daily rides in his red Ford F-150 truck that has a blue or green tailgate, Maine registration 1562WA. Ridley has been becoming forgetful lately and suffers from other medical conditions as well. Ridely is a white male, 5’11”, 185 lbs with white hair and brown eyes.