Premiership referee Mark Clattenburg halted the Championship game midway through the first half after receiving a complaint from Jerome following a verbal clash with the Italian defender.
The official addressed both managers on the touchline before letting Bellusci off with a warning, although he booked Jerome moments later for fouling the Leeds player.
There were no further incidents between the two but it emerged after the match that Jerome had accused his opponent of making a racist comment.
“Cameron Jerome has alleged he was the subject of a racist remark,” said Norwich manager Neil Adams.
“Because of that, Mark Clattenburg, who I felt handled the incident very well, came over to the touchline to explain Darko (Milanic) and myself what I have just told you.
“He spoke to Cameron because of the way he had reacted. That was what he explained to us. He spoke to the players at half-time with a representative from each club and statements have been made now.
“Mark will submit a report to the relevant authorities and it will be dealt with from there. He didn’t take any action at the time. He merely relayed what Cameron had said. It must now go through the proper channels.
“Yes, Bellusci is the player who has been alleged to have made the remark. My concern was to speak to Cameron at the break to make sure his head was right.”
Adams added: “We back our player. I’m sure Leeds will back their player but other than that we can’t comment any further because there is now going to be an investigation, I would expect.”
Milanic confirmed he would be investigating the matter.
He said: “I have not spoken to my player yet – I will speak to him later. It’s difficult for me to comment on something I didn’t hear. This is all very new to me.”