Ange Postecoglou has condemned a 'couple of idiots' after a member of Celtic's staff was struck by a glass bottle thrown from the crowd during Sunday's Old Firm derby.
The Hoops came out on top in the crunch clash, beating Rangers 2-1 at Ibrox to go go six points clear at the top of the Scottish Premiership. The atmosphere was typically feverish, and things boiled over just before half-time.
Towards the end of the first period, a Celtic staff member was hit by the projectile and required stitches for a head wound during the break. This delayed the start of the second half with ground staff also having to remove shards of glass from the penalty area.
Speaking after the game Postecoglou criticised those involved in the disorder.
"It is disappointing because this is a fixture that gets beamed around the world," he said. "Two teams going at it, first and second spot. You don't need a couple of idiots ruining it. I don't know what people are trying to achieve by doing that.
"Sitting here now as the winning coach, that kind of taints my view of it, but I thought anybody watching that would agree it was a good game of football."
Rangers boss Giovanni van Bronckhorst echoed these sentiments, insisting that 'safety is first'.
On the pitch, Aaron Ramsey got Gers off to a perfect start, netting inside three minutes. However, Tom Rogic soon levelled things up and a Cameron Carter-Vickers goal decided the contest on the stroke of half-time.