Celtic have been handed an £11,000 fine for their fans setting off flares and throwing objects during their Europa League play-off win in Sweden last month.
The Hoops booked their place in the group stage of the competition with a 4-1 win at the Friends Arena in Stockholm, going through 6-1 on aggregate.
But the match was somewhat overshadowed by the crowd trouble.
And UEFA’S control, ethics and disciplinary body met on Thursday to rule on the charges against the Scottish Premiership club.
Celtic claimed that some Swedish supporters managed to infiltrate the away end as fans and police clashed.
However, the Scottish champions will have to cough up the £11,000 following the ruling.
AIK have been fined £7,000 for stairways being blocked.
This latest charge is the 17th time Celtic have been fined by European football’s governing body since 2007.
Their previous punishment came in 2017 when they were forced to pay £8,900 after a fan ran on to the pitch and tried to kick Paris Saint-Germain striker Kylian Mbappe in the Champions League.
Meanwhile, Celtic’s Glasgow rivals Rangers have had a section of Ibrox closed for their last two Europa League home games this season after being charged by Uefa for ‘racist behaviour’ by their supporters in games at St Joseph’s and Legia Warsaw.
Celtic got their 2019/20 Europa League campaign off to a decent start with a 1-1 draw at French club Rennes.
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Ryan Christie cancelled out Mbaye Niang’s earlier penalty in a game that also saw Hoops forward Vakoun Bayo sent off.
The Ivorian had only been on the pitch a matter of minutes.
Celtic also face Italian side Lazio and CFR Cluj of Romania in Group E.
Neil Lennon’s men are currently top of the Scottish top flight, having amassed 15 points from their opening five league games.