Police divers have joined the search to find a missing 90-year-old pensioner.

William Ritchie was last seen at his home on West Road in Fraserburgh, Aberdeenshire, on Sunday.

A dive unit has been called to search burns and deep verges along the A981 Strichen to Fraserburgh road.

Inspector Kevin Goldie said: "It has been three days since Mr Ritchie was reported missing to police and our concerns for him increase every day.

"This is before we start taking into account the current unfavourable weather conditions we are currently dealing with, what with the snow that fell overnight and freezing temperatures.

"Search teams are continuing with their efforts this morning focusing on the A981 which runs from Fraserburgh to Strichen."

He added: "A dive unit will also be assisting to thoroughly check the harder to reach verges at the side of the road.

"Once again I would appeal to anyone who saw Mr Ritchie going as far back as the past couple of weeks to please get in touch as we continue to build a picture of his daily life."

Anyone with information is asked to contact 101.