BT Sport were forced to make an on-air apology after Celtic fans unveiled a banner that read ‘f*** the Crown’.
The Hoops were playing in Poland against Shakhtar Donetsk in their Champions League clash, that ended 1-1.
Following the death of Her Majesty Queen Elizabeth II, all British clubs playing in Europe this week were permitted to hold a minute’s silence.
However, it was agreed that the silence would be scrapped for the Shakhtar vs Celtic match though players wore black armbands as a mark of respect.
Just before kick-off, the visiting fans unfurled the banner that read: ‘F*** the Crown’, which saw the broadcaster apologise if any viewers took offence.
Then, while the Champions League music was played, they revealed another banner that said ‘Sorry for your loss Michael Fagan’.
Michael Fagan gained notoriety in 1982 when he managed to scale the walls of Buckingham Palace and creep into the Queen’s bedroom.
The schizophrenic spent around 10 minutes talking to the monarch before being tackled by a footman.
In the match itself, it was a good performance by Celtic and they would have felt like they should have taken all three points.
The Scottish champions had several chances even before Artem Bondarenko put through his own net in the 10th minute following a penetrating run from Reo Hatate.
Shakhtar equalised out of the blue in the 29th minute after a pass inside Josip Juranovic gave left-winger Mykhaylo Mudryk a clear run at goal.
Former Celtic winger Marian Shved had a goal disallowed for offside and forced a good stop from Joe Hart as Shakhtar enjoyed a bounce until half-time.
But Postecoglou’s side regained control immediately after the interval and substitutes Giorgos Giakoumakis and Daizen Maeda missed the best of a series of opportunities.