Police Scotland is now actively searching for Stephen Donald Gow Baird, who was last seen in the Rosebank, Sauchie area at 9.15am.
A Police spokesperson said: “Stephen is 6ft, with short brown greying hair and was wearing a blue and navy Prada jacket and black Prada tracksuit. He was also carrying a dog lead.
“Stephen has links to Dumbarton.”
People can contact 101 quoting incident number 2759 of December 21.