Derry GAA has said it is awaiting a referee's report before commenting on video footage which appears to shows the official being knocked to the ground during an altercation after a championship game.
Ballinascreen overcame Greenlough by a single point in the tie played in Dungiven on Saturday but the final whistle saw a number of Greenlough players and members surround referee Damian Harkin and his officials as they left the pitch.
A number of video clips emerged, one of which shows the referee apparently being knocked to the ground after a man ran onto the field.
Scenes from after Greenlough’s defeat by Ballinascreen in the Derry SFC today #GAA pic.twitter.com/VjFbu7jm41
— Irish News Sport (@irishnewssport) September 22, 2018
An umpire had also ended up on the ground moments earlier following an altercation.
Ballinascreen had won the game, a repeat of last year's semi-final, by 0-13 to 1-9.
A spokesman for Derry GAA said: "The GAA's position in relation to violence is clear. We have been made aware of an alleged incident and we await the match referee's report before making any further comment."
The statement was issued as Tyrone County Board confirmed that a collision which left Sean Cavanagh with head injuries in a club championship game was accidental.
Cavanagh suffered a broken nose and concussion while playing for Moy against Edendork on September 15.