Celtic manager Ange Postecoglou confirmed that a member of his coaching staff was hit by a missile during the Old Firm derby.
The Hoops came from behind to secure a 2-1 victory at Ibrox and extended their lead over their rivals Rangers at the top of the Scottish Premiership to six points with just six games remaining.
Aaron Ramsey had given Giovanni van Bronckhorst’s side the lead early on, only for Tomas Rogic and Cameron Carter-Vickers to strike back for Celtic before the break.
However, the match was marred by glass bottles being thrown onto the pitch, with the game being delayed before kick-off in the second half when parts of a broken bottle were found in the Celtic penalty area.
In a separate incident, a member of Celtic’s staff was also struck by an object thrown from the crowd.
“Yeah, he was [hit by a missile], on the way in. I think he is okay. He had a couple of stitches,” Postecoglou told reporters when asked if the staff member had indeed been struck by a missile.
“It is disappointing because this is a game that gets beamed around the world and it stands on its own.
“You had two teams going at it in first and second spot and you don’t need a couple of idiots spoiling it.”