CELTIC are being probed by UEFA chiefs over claims of sectarian chanting at a Europa League game.
Bigwigs acted after a top cop flagged up alleged offensive behaviour by fans during the match against Rennes at Parkhead.
If the hate song claims are found to be true the Hoops could be fined or their fans banned from European ties.
Last night a club insider said: "Celtic could be in big trouble over this. UEFA can hand down heavy punishments. The club have already pleaded with fans to cut out IRA songs at matches but it looks like some won't listen."
It's understood a senior Strathclyde officer working at the match earlier this month approached UEFA delegates with the chant claims.
A spokesman for the governing body said last night: "We have opened a disciplinary case against Celtic." It will be heard on December 8. In April, Rangers were fined £35,500 and their fans banned from their next away Euro game after they were found guilty of discriminatory chanting in a Europa League tie.
Read more: http://www.thesun.co.uk/scotsol/homepage/news/3931165/Celtic-UEFA-probe-over-hate-songs.html#ixzz1dfeEOfeU