TULSA, Oklahoma -- Tulsa Police have issued a "missing and endangered person" alert for a 54-year-old Tulsa man.
Ralph Stevenson was last seen March 11, 2011. Police say he has several medical conditions that put him at risk.
Stevenson is a white male who is 5'10" tall and weighs 180. He was last seen leaving LaFortune Towers, 1725 Southwest Boulevard, at about 4 p.m. March 11.
Stevenson was wearing a white T-shirt and blue jeans. He left on foot with a backpack.
The 54-year-old Tulsa man suffers from liver cancer, diabetes and intermittent amnesia, according to the alert.
If you have seen Stevenson or can help police locate him, call 911.