Rangers midfielder Glen Kamara was allegedly racially abused during his side’s defeat to Slavia Prague in the Europa League.
The Gers were beaten 2-0 by the Czech Republic side at Ibrox as the fiery game saw two of Steven Gerrard’s players sent off.
Things got even more heated in stoppage time as Ondrej Kudela appeared to whisper something in the ear of Kamara, provoking a furious reaction.
Gerrard hit out at accusations that his player was lying about the incident in his post-match press conference.
The Rangers boss said: “It’s over to UEFA now. I hope it doesn’t get swept under the carpet.
“Glen Kamara to me is one of my own. I 100% believe him.
“I’m proud of all of my players showing solidarity.
“The disappointing thing for me is there are people trying to defend the opposition player – calling us liars.”
Peter Olayinka headed Slavia ahead early on but Gers felt they could still turn it around in the second half.
However, Roofe’s dismissal for a brutal boot to the face of Prague keeper Ondrej Kolar was a fatal set-back which was quickly compounded by Balogun, who picked up a second yellow as he handed Nicolae Stanciu a set-piece chance he expertly sweep home the second.