Celtic manager Ange Postecoglou has expressed his disappointment after fans interrupted a minute's silence ahead of the Dundee game.
Supporters could be heard booing and singing as the players stood in the centre circle to commemorate British and Commonwealth soldiers in the last match at Dens Park before Remembrance Sunday.
Members of the crowd sang about Aidan McAnespie, an Irishman who was killed by British troops in 1988, before staging a protest against the board by throwing tennis balls onto the pitch.
The disrupting of the silence was slammed by former Celtic player Andy Walker, who called the scenes "embarrassing".
And Postecoglou admitted after the match he was not impressed by the stunt, as he called on supporters to show more respect.
He said on BBC Radio Scotland: "Obviously I’d prefer it didn’t happen.
“I guess the ones that did (disrespect the silence) have their reasons for it.
“From my perspective we try to observe these things in the most respectful manner we can and I’d encourage everyone to do that.”
A 4-2 win took Celtic to within a point of Rangers, with their rivals not playing until 3pm.