Rangers have strongly condemned an incident in which Celtic’s Arne Engels was struck by a coin during Thursday’s Old Firm match.
The Celtic substitute required medical attention after being hit while preparing to take a corner late in Rangers’ 3-0 victory at Ibrox.
Due to the ongoing dispute over away ticket allocations, no Celtic fans were present in the stadium. Rangers have pledged to cooperate fully with police in their investigation.
Celtic stated that Police Scotland is investigating two separate incidents related to the match.
They added: “The repeated targeting of our players and staff with missiles is quite appalling and completely unacceptable.”
Celtic manager Brendan Rodgers confirmed that Engels was “OK” but added that “an inch lower, he would have been [hit] right in the eye”.
The incident came near the conclusion of a derby that cut Celtic’s lead at the top of the Scottish Premiership to 11 points and could leave Rangers facing punishment.
Celtic defender Alistair Johnston saw Engels being hit and cautioned “everyone to be smart” when at matches.
“It’s humans out there, someone’s son, so let’s refrain from chucking things at guys’ heads,” the defender added.