Alex Ferguson accused Manchester City boss Roberto Mancini of "haranguing" the officials during Manchester United's costly 1-0 defeat to their city rivals on Monday.
At one point, fourth official Mike Jones was stood between the pair, who were eventually pulled away by members of their backroom teams.
"He refereed the game," said Ferguson.
"He was out on that touchline the whole game haranguing the referee, the fourth official and the linesmen."
"The minute I come off the bench for a bad tackle by De Jong on Welbeck, he was out again," added Ferguson
"He can't have it both ways. He's been complaining about referees this season but he won't be complaining tonight that's for sure."
Mancini attempted to play down the spat, insisting it was just the tension of the moment that got the better of his opposite number.
"He doesn't talk with the referee or fourth official? Never?. "I didn't speak with him (Ferguson). He turned towards me and said something."
The Italian continued: "For me it is no problem. I can understand.
"I didn't say anything against him. I was only talking to the fourth official."
Ferguson might reflect that his players would have been better served if they had shown a similar amount of fight.
Instead, the visitors were poor, having adopted a policy of containment, and had no answer once Kompany had powered home David Silva's corner.
"It was a bad time to lose a goal," said Ferguson.
"It gave them the foothold in terms of just playing out the game - typical Italian, brought three defenders on and played counter-attack.
"But we didn't test the goalkeeper so we can't blame [anyone else], we can only blame ourselves really."
The evening was given a surreal air when pop superstar and celebrity City fan Liam Gallagher burst into the media room after Mancini had given his post-match observations to announce: "Ferguson must have been on the whisky," and: "I love Mancini, he is nearly as cool as me."
It was certainly more humorous than Mancini, who despite his side's second league double over United in 42 years taking them top on goal difference with just two games left, continued to insist the Red Devils are favourites to win the title.
"United are the favourites," he said.
