Sean Christopher Hennigan was 32 when he was last seen on December 1, 2011, after a period of mounting personal and financial problems in Lowell, Massachusetts. He had recently lost his job and been evicted, and in the months before he vanished he systematically cut off contact with family, friends and his girlfriend.

Physically he is a white male, 5 feet 9 inches, about 180 pounds, with brown hair that can become thick and curly or wavy if grown long, hazel eyes, freckles and a noticeably sloped shoulder believed to be on his left side. He sometimes wore a thick red-and-brown beard or goatee. Clothing worn that day has not been released publicly.

The Lowell Police Department keeps the case open and it has been entered into national missing person databases. Online posts have suggested an unconfirmed sighting in California in 2014, but there have been no public, concrete leads. Does anyone have information about Sean’s last known movements or the unconfirmed sighting?