Search for missing chief inspector Tim Frohwein
Derbyshire Police are searching for one of their top officers, who has been missing from his home for three days.
Ch Insp Tim Frohwein was last seen in Buxton, where he lives, at about 14:00 BST on Sunday.
Police believe the 48-year-old may have gone for a walk and they are concerned because he is recovering from recent knee surgery.
A major mountain rescue search started on Sunday but was stood down late on Monday.
Assistant Chief Constable Dee Collins said: "For him to be able to do something like this does feel very out of character and that's why I'm particularly concerned.
"We think he may have gone for a walk. This is particularly concerning because he hasn't been home or been in contact with the family since, and he's recently had some quite extensive knee surgery and so we don't feel as if he's going to be terribly mobile for very long."
The married father is currently chief inspector at Chesterfield, looking after Amber Valley and Chesterfield, and was previously head of roads policing.
He was last seen wearing a three-quarter length dark coat, pale blue shirt and brown jeans.