Celtic face UEFA disciplinary proceedings over the behaviour of fans at their Europa League victory over AIK in Sweden.
Charges against the Scottish champions relate to setting off fireworks and throwing objects, the European governing body announced.
A number of flares were lit in the away section ahead of Celtic's 4-1 victory in Stockholm last week.
Footage showed police hitting supporters with batons and forcing them back towards a fence at half-time with cups of liquid being thrown towards the clashes.
Celtic later claimed that a number of fans of Hammarby, AIK's rivals, had entered the away end.
The case will be dealt with by the UEFA Control, Ethics and Disciplinary Body on 19 September.
🆕📝 Greg Taylor joins #CelticFC on a four-year deal!
— Celtic Football Club (@CelticFC) September 2, 2019
Welcome to the #TrebleTreble winners, @GregGregtaylor 🍀⚪
👋 #WelcomeGreg
Meanwhile, Greg Taylor is relishing the challenge of meeting Celtic fans' expectations after completing his move from Kilmarnock in the final hours of the Scottish transfer window.
The left-back took time out from the Scotland training camp near Edinburgh to sign a four-year contract at Celtic Park after the Scottish champions agreed a deal with Killie.
The deal has long been mooted over the summer, even before Kieran Tierney's £25million move to Arsenal, and Taylor was a relieved but delighted man to get his big move.
The 21-year-old told Celtic TV: "It's been a whirlwind of a day but I'm over the moon to be here and thankfully that's it over the line.
"As soon as I knew of Celtic's interest, I was desperate to come, so it's been a great day, certainly now that it's done."
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