Two runners who took part in a Cambridgeshire half marathon at the weekend have died, organisers said.
The Great Eastern Run took place in Peterborough on Sunday and was hosted by the city council.
Det Con Rob Davys, 53, based at Godmanchester, died during the race. He had been due to receive a commendation for his police work next month.
A second man, whose name has not been released, died shortly after the race, a council spokeswoman said.
Race director Stuart Hamilton said it was "such a dreadful shock".
"On behalf of the entire Perkins Great Eastern Run team, I send our sincere condolences to the families and friends of the two runners," he added.
In a statement Cambridgeshire police said the force flag was flying at half mast at the headquarters at Hinchingbrooke.
Mr Davys had been due to receive a judge's commendation from the chief constable in November for outstanding work on a fraud case in which carers had stolen money from an 83-year-old woman.
He had also received a commendation in 2008 for work on an inquiry into large-scale conspiracy.
Chief Constable Simon Parr said: "I was very saddened to hear of Rob's death over the weekend and my thoughts go out to his family, friends and colleagues."