Fireworks appeared to be set off outside Celtic Park on Saturday during a two-minutes silence to pay tribute to Prince Philip, who died on Friday.
All professional games around the United Kingdom this weekend are observing a period of remembrance for the late Duke of Edinburgh after he passed away at the age of 99, with players also wearing black armbands.
But ahead of Celtic’s match against Livingston a number of loud bangs were heard, with some players seen looking up to the skies during the silence.
The on-duty commentator for the game said: “I think that was some fireworks going off outside Celtic Park. Not sure what that was but some pretty loud bangs anyway.”
Celtic went on to beat Livingston 6-0, although they are unable to catch league leaders and bitter rivals Rangers, who have already mathematically won the SPL.
A number of high-profile figures throughout the world of sport have paid tribute to Prince Philip since news of his passing.
Tottenham manager Jose Mourinho interrupted his own press conference on Friday to say: “I want to express my condolences to the Royal family.
“To be very honest, I have a deep, deep, deep respect for the Royal family. All my condolences. It’s not just this country sharing this feeling.
“I have the utmost respect. I feel sad for the departure of Prince Philip on a personal basis, because I have only positive feelings for the meaning of the family. I feel very sorry, but unfortunately this is life and we have to keep going.”
Chairman of the English Football League Rick Parry said: “As a patron of over 800 organisations, his high regard for the encouragement of sport and welfare of young people was unequivocal, and his loss will undoubtedly be felt not only here in the UK but across the world.”