Inverness boss John Hughes felt referee Willie Collum called it wrong with his decision to send off Josh Meekings in his side's 2-2 Scottish Premiership draw with St Mirren.
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It was the visitors who struck first in the Highland capital courtesy of Jason Naismith in the third minute, but Inverness had turned the game on its head by half-time courtesy of Ross Draper's equaliser and a Greg Tansey effort.
St Mirren, however, earned themselves a point in their fight to get clear of the relegation play-off spot when Sean Kelly levelled matters, although it could have been more had they taken advantage of central defender Meekings being sent off.
Referee Collum deemed Meekings had denied Josh Magennis a clear goalscoring opportunity - a decision Hughes did not agree with.
He said: "I didn't think it was a red card. Josh Magennis would not have got the second touch to the ball as Graeme Shinnie was getting that.
"He got it wrong - it wasn't a red card. I asked for an explanation from the fourth official, but he found it very difficult to give me one."
St Mirren boss Danny Lennon had sympathy with Caley Thistle with regards to the sending-off, but insisted it made it harder for his team to find a winner.
He said: "I think that Josh's pace might have taken him through, but perhaps it was a little bit harsh as the two players were shoulder to shoulder.
"You take a decision like that, but sometimes in puts a spanner in your own works because the other team then tries to hold on.
"They withdrew a bit, played two banks of four with one striker and that made it a little bit harder for us to break them down."