UPDATE: Officials have canceled the silver alert as Johnson has been found and is safe.
A Silver Alert has been issued in Idabel for 72-year-old Douglas Johnson.
Officials said that Johnson was last seen around 1:30 p.m. Friday afternoon wearing a blue rain jacket with a black hood, blue jeans and house slippers.
Officials said that he has dementia and left his residence, at 1801 N Central in Idabel on a bicycle.
They said he is 6 feet tall with gray hair.