CCTV could help trace a missing pensioner who vanished from his home, as police piece together his last-known movements.
Alexander Stuart Nicol, 73, has not been seen since leaving his home in Eslington Terrace, Jesmond, Newcastle, on Friday morning.
Friends raised the alarm when he failed to attend a social function on Friday evening, and officers searching for Mr Nicol have now released images of him in Jesmond Metro Station, just hours after he went missing.
Police have said the Scotsman arrived at Jesmond Metro Station at around 9.25am on Friday, before boarding a train heading for Newcastle Airport at 9.30am.
He got off the Metro at Regents Centre at 9.41am and turned right from the station, walking a loop around the main bus area, possibly looking at bus timetables.
He then walked towards Gosforth Library before spending around nine minutes inside the building and leaving.
Mr Nicol was last seen heading back in the direction of the bus stops at Regent Centre from the library.
Det Chief Supt Chris Thomson, from Northumbria Police, said: “Inquiries are continuing today to trace Alexander.
“Officers are piecing together his movements throughout Friday and we are making inquiries around church services today which Alexander is known to attend.
“We would again urge anyone who has seen him or knows of his whereabouts to come forward.”
Mr Nicol was wearing a light beige overcoat, grey checked hat, dark trousers and shoes, black gloves and a checked scarf.
It is believed he doesn’t suffer from any medical conditions or ill health but police say they are concerned for his whereabouts.
He is known to frequently visit Tynemouth, as well as Brunswick Methodist Church in Newcastle.
Anyone with any information is asked to contact police on 101, extension 69191.