A former railway line is being searched by police in a bid to find a missing 90-year-old pensioner.

William Ritchie was last seen leaving his home in Fraserburgh, Aberdeenshire, at midday on Friday.

Officers with police dogs are searching an 11-mile stretch between Fraserburgh and Strichen.

Mr Ritchie, known as Bill, is 5ft 7in, white, slim and has short, grey hair.

Inspector Kevin Goldie said: "Another night has passed without anyone seeing or hearing from Bill which means our concerns for him are growing.

"Bill has been known to be a keen walker in the past and regularly took a route round Fraserburgh covering West Road, Strichen Road, Boothby Road and Watermill Road.

"On occasions he has been known to walk as far as Memsie and Strichen but has been keeping closer to home recently.

"Searches will continue today to ensure a possible route Bill might have taken is thoroughly searched while we make the most of daylight hours."

He added: "He regularly shops at Asda and the local Co-op and attends the post office at Mid Street.

"He appears to be a well-known face in the Fraserburgh area and we would ask anyone with information about his movements in the past week to please get in touch."

Anyone with information is asked to contact 101.