Edward Andrews, who reportedly lives alone, was last seen May 31 by neighbors in a mobile home park in the Hemet-area.
Andrews is white, about 5'11" and 173 pounds, with blond hair and blue eyes. His vehicle, a gray 2005 Saturn Ion with paper plates, also is missing.
Authorities have reason to believe that a young man caught on camera has knowledge of what happened to Andrews. Surveillance video shows the man walking up to a number of ATMs and withdrawing money from the elderly man's bank account. The man used Edwards' ATM card and proper pin number.
Surveillance images released by police were taken from ATM machines at banks in Riverside, Orange, and Los Angeles counties.
Police say since June 4, more than $92,000 has been withdrawn from Andrews' account.
The young man in the ATM pictures may be driving a white Toyota Prius. The Riverside County Sheriff's Department is asking for the public's help.
"Anyone who recognizes this person in the photographs, we need to find out who he is and we need to find out if he knows where Andrews is because we want to make sure that Andrews returns home safe," said Jerry Franchville from the Riverside County Sheriff's Department.
If you have any information, you're asked to call your local police or the Riverside County Sheriff's Department at (951) 791-3717.