Rangers chairman John McClelland has vowed to root out the racist minority who brought shame on the club at Celtic Park on Saturday.
There were reports of racist abuse at Celtic Park
Some racist abuse was heard from a few visiting fans while black players Bobo Balde and Momo Sylla had possession during Celtic's 1-0 win.
Now McClelland is determined such behaviour will not be tolerated among Ibrox fans in the future.
"I do not condone this kind of behaviour, I deplore it," he said.
"There was such a crescendo during Saturday's match and, although I thought I heard noises of this kind, I can't be 100% sure.
"However, if it did happen, it is unacceptable.
"It is a difficult problem to deal with, because I know it must only be a small minority, but we will do everything we can to make sure the message gets across to our fans.
"We do not want people who come to games to indulge in racist behaviour like this.
"Steps will be taken to make sure we weed these people out and I urge fans not to conduct themselves in this fashion."