Newcastle manager Eddie Howe was pushed by a pitch invader during the Premier League clash at Leeds.
With the match level at 2-2 in second-half stoppage time, Howe was confronted by a supporter who evaded security to reach the dugout.
The pitch invader pushed Howe, who reacted angrily, before stewards intervened and ejected him from the ground.
Magpies assistant Jason Tindall was among those to chase the man away from the sidelines.
Reacting on talkSPORT, commentator Sam Matterface said: “Oh! There’s a supporter who has got into the dugout and he’s started to push and pull with Eddie Howe down in front of us!
“Just as the free-kick was smashed against the wall to go out for a corner, a supporter has just got onto the field of play and then run to the Newcastle dugout and started pushing Eddie Howe!
“What on earth was that all about?! He must be banned for life. There is no way that guy should come back into a football match, I’m afraid.
“Eddie Howe has done absolutely nothing, for a start, but also he should feel safe in his technical area, that is disgusting behaviour.”
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England legend Stuart Pearce added: “I’m not sure what goes through people’s minds at times. It’s an emotional game, I understand that but, my goodness, please.”
A hot-tempered clash ended all-square after three penalties and a red card.
Leeds took the lead through Luke Ayling but failed to double their advantage when Patrick Bamford missed from the spot.
Moments later, Newcastle were awarded a penalty and Callum Wilson made no mistake.
The Magpies striker put the visitors in front with a second effort from 12 yards before Rasmus Kristensen salvaged a point for the hosts.
In the dying stages of the game, Whites full-back Junior Firpo was sent off for a second yellow card – which is when Howe was confronted by the angry supporter