Paul Lambert was shown a red card just minutes before the break in a dramatic end to the first half of the East Anglian Derby.
The Blues boss had to be restrained by stewards and police as he gestured towards the Norwich City bench before being shown a red card by referee Peter Bankes.
The incident was sparked by a strong Jon Nolan challenge which was punished by a yellow card.
But with the Norwich crowd and bench calling for a red, players came together and staff clashed on the touchline, resulting in Lambert’s red card after pushes and gestures towards the Norwich staff.
MORE: Norwich City 3-0 Ipswich Town: Blues well-beaten in fiery derby as Lambert sees red
Norwich’s head of performance, Chris Domogalla, was also shown a red card for his part in the melee before the two continued their frank discussion on the way down the tunnel.
The red cards came just seconds before the half-time break, with Norwich a goal up thanks to Onel Hernandez’s second-minute opener.
Teemu Pukki scored twice in the second half to ensure a 3-0 win for the hosts.
Reflecting on the incident after the game, Lambert said: “Listen, you know me, I ain’t going to stand there and watch players run 30 yards to get people booked.
“I’m certainly not going to let somebody come into our technical area.
“I don’t even know who it was, I never even saw who it was, but I’m not letting him to come and provoke us.
“I’ll stand my ground. Do I regret it? No I don’t. I’m certainly not going to have that.
“It was a steward who was actually trying to put his hands on me, which I objected to. The police guy was great. He was totally fine and just trying to disperse it.
“As I said, I wasn’t just going to stand back and let somebody I didn’t know come in our technical area. I won’t have that.”
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