Celtic have been billed on Thursday with Cluj over supporters behaviour in the Europa League encounter.
After fireworks were allegedly set off by enthusiasts in the group-stage fixture contrary to their Romanian competitions disciplinary proceedings have been opened from the Scottish champions.
The UEFA management, integrity and body will deal with the situation at its meeting on October 17.
Celtic won the game 2-0 to go top of Group E after two matches and following host side Lazio on October 24.
The Parkhead club had been #11,000 for fans pitching objects in August in Stockholm during the 4-1 Europa League win over AIK and setting off flares.
Celtic suffered a setback at the weekend since they were beaten 2-0 from Livingston in the Scottish Premiership.
The defeat implies Celtic are second in the table.
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