Sarnia police are searching for a 75-year-old man who went missing in the city's south end.
Anthony Robertson was last heard from on Thursday at around 6:30 p.m. and was believed to be walking around the downtown area.
Police describe Robertson as being between 5'8" and 5'9" tall with brown eyes, grey hair and a beard. He was last seen wearing a blue plaid lumber jacket with black jeans, and black shoes.
He also responds to the name "Tony."
In an update issued Friday morning, police said Roberston is a vulnerable person, which has led the Sarnia Police Service to "intensify" and expand their search.
Residents are being asked to search their property and surrounding area thoroughly for Robertson.
Anyone with information regarding his whereabouts is asked to contact the Sarnia Police Service at 519-344-8861 extension 0.
