Celtic midfielder Arne Engels was struck by a coin in the derby match against Rangers at Ibrox.
The record Celtic signing fell to the ground in the corner in the final few minutes of the match after a coin was thrown from the stands.
Referee Don Robertson could be seen handing the coin over to a security officer at the side of the park after it was picked up off the turf by his assistant.
Rangers midfielder Nico Raskin appeared to appeal to supporters after the shocking incident.
🎙️ "This is the ugly side we do not like to see." 🎙️ "Absolutely ridiculous. That is disgusting. There is no place for that in football." The Old Firm match is temporarily halted as Celtic's Arne Engels is struck by an object from the crowd. pic.twitter.com/f8KvI7EdUP
— Sky Sports Scotland (@ScotlandSky) January 2, 2025
Thankfully, Engels was not seriously injured and was able to continue and see out the rest of the match. The midfielder was checked by referee Robertson before playing on.
The coin was quickly placed in an evidence bag by a police officer at the side of the pitch.
Sky Sports commentator Ian Crocker explained: "Oh no, has he been hit by something there?
"Sadly objects have been thrown. And this is the ugly side that we do not want to see."
Co-commentator Chris Sutton said: "Absolutely ridiculous isn't it."
Neil McCann then added: "That is disgusting. We don't want to see that. There is no place for that in football."