THE CLUB called the flags "unacceptable".
Celtic removed Palestinian flags from its home stadium that were hung up by fans ahead of Scott Brown's final home game for the team.
The club opened Celtic Park to allow fans to display messages for the captain before Wednesday night’s game against St Johnstone, while some fans took the opportunity to show solidarity with Palestine by hanging up flags and banners.
They were subsequently removed, with the club saying it was "unacceptable" and that the situation was "exploited" by fans.
"We had invited supporters to pay tribute to our club captain, Scott Brown, by giving them the opportunity to display their own banners in the stadium
"Unfortunately a small group, which was given access in good faith, has attempted to exploit this opportunity, taken advantage of an occasion intended for our club captain, Scott Brown, and used it for a different purpose.
"Clearly this is unacceptable and the display was immediately taken down by the club."
Celtic fans have always stood with Palestine, with this most recent show of solidarity coming after dozens of Palestinians died in Israeli airstrikes on Gaza amid heightening violence in the Middle East.
Back in 2016, Celtic supporters groups raised over £130,000 for Palestinian charities in an attempt to match a fine handed out by UEFA for the club's fans hanging banners and flags in solidarity.