Celtic have been charged over supporters` behaviour in the Europa League encounter with Cluj on Thursday.
Disciplinary proceedings have been opened against the Scottish champions after fans allegedly set off fireworks at the group-stage fixture against their Romanian opponents.
The UEFA control, ethics and disciplinary body will deal with the case at its meeting on October 17.
Celtic won the game 2-0 to go top of Group E after two matches and next host Italian side Lazio on October 24.
The Parkhead club were fined £11,000 for fans setting off flares and throwing objects during the 4-1 Europa League play-off second-leg win over AIK in Stockholm in August.
Celtic suffered a setback at the weekend as they were beaten 2-0 by Livingston in the Scottish Premiership.
The defeat means Celtic are second in the table, two points behind leaders Rangers.