Referee Martin Mulholland has died after collapsing at a hurling match in Derry.
Mulholland was refereeing a quarter-final clash between Kevin Lynch's, Dungiven, and St Colm's, Ballinascreen, when he collapsed.
Paramedics, who initially treated Mr Mulholland on the pitch, brought him to the changing rooms, where a defibrillator was used to try and revive him.
He was then brought to Coleraine Hospital, where he later died.
Robert Emmets GAC, Slaughterneil, hurling secretary Damien McEldowney, who is a friend of the family, was at the game and he expressed his shock: "Five minutes in to the second half he got accidentally struck on the leg with the ball. A minute after that he blew the whistle and went down.
All league and championship matches scheduled for this weekend in the county have been postponed as a mark of respect.
