UPDATE: Police have confirmed Mark has been found and is in the care of the ambulance service as a precaution.
A "vulnerable" 73-year-old has gone missing from his Brislington home.
Police are asking for help to trace Mark Greenhalgh.
He was last seen at about 8.15pm on Friday (April 17).
A spokesman for Avon and Somerset Constabulary said: "He is fit and able to walk some distance but can be forgetful and confused.
"He may travel by public transport but is not believed to have money or bank cards with him. He may head for the city centre or floating docks areas."
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Mark is described as white with slightly ginger hair and has tattoos on both arms.
If you know where he is now call 999 quoting reference 5220084812.
If you have any other information which could help police to find him call 101 quoting the same reference.
