CELTIC and Europa League Group E rivals Lazio have both been charged by UEFA after fans sang “illicit chants” in the Hoops’ 2-1 win at Parkhead last week.
The chants were not racist, but related to the use of obscene language.
The champions have also been sanctioned after supporters displayed “illicit banners” during the game.
The cases will be adjudicated upon by UEFA’s control, ethics and disciplinary body on November 21.
It is the 19th time Celtic have been punished since 2007 and their third charge during this campaign.
Last month, they were fined £10,400 for fans setting off flares in the 2-1 victory over Cluj and the club paid an £11,000 fine for the same offence plus throwing objects in their 4-1 play-off victory over AIK in Stockholm in August.
Neil Lennon’s side travel to Rome to face Lazio a week tomorrow in their fourth group game, with an estimated 9,000 travelling fans subject to a strict alcohol curfew.
Before the meeting in Glasgow, visiting supporters were seen giving fascist salutes as they marched through the city on the way to the ground. The home followers responded by displaying a banner depicting disgraced former Italian leader Benito Mussolini.
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