Police say they have had a big response from the public following the news that a teacher from Durham School was reported missing. They resumed their search, which is now in its third day, at first light.
Chief Inspector Andy Huddleston says the last known sighting of Mr Bushnell was between 1200 and 1230 at Blackhall Rocks.
Martin George, head teacher at Durham School has appealed for missing Mark Bushnell to get in touch and say that he is safe.
Police have released this photo of Mark Bushnell and his family. Mark is a teacher at Durham School. He was last seen on Sunday at Blackhall Rocks.
The head teacher of Durham School, Martin George, says Mark Bushnell is highly respected and that everyone at the school is deeply concerned and shocked at his disappearance. He is pleading for Mr Bushnell to contact him, 'we need to know you are safe'.
Police officers confirm a new last sighting for Mark Bushnell at Blackhall picnic site on Sunday lunchtime.
Police renew their appeal for missing Durham School teacher Mark Bushnell. They say there is 'no identifiable trigger' to explain why he would disappear and that everything in his life 'seemed normal' to family and friends.