Webo was enraged and was heard to repeat at least six times “Why you say negro?” as he sought an explanation from Coltescu.
Moments later, Ba came off the bench and stood in front of Coltescu and said: “Why when you mention a black guy, you have to say ‘This black guy?’”
UEFA replaced Coltescu and pledged to investigate.
“Following an alleged incident involving the fourth official, the match was temporarily suspended. After consultation with both teams, it was agreed that the match would restart with a different fourth official,” UEFA said in a statement.
“UEFA will thoroughly investigate the matter and further communication will be made in due course.”
During the interruption, Basaksehir posted a message on Twitter against a UEFA backdrop with the message “NO TO RACISM.”
Seven years ago, Hategan was in charge of a match between CSKA Moscow and Manchester City when City’s black players were racially abused.
City captain Yaya Toure directed referee Hategan toward fans making monkey noises at the English club’s black players.
Michel Platini, UEFA’s president at the time, requested an internal inquiry involving the referee to examine why guidelines were not followed to respond to discrimination incidents during matches.
Elsewhere in the Champions League, Cristiano Ronaldo got the better of Lionel Messi by scoring two penalties to lead Juventus to a 3-0 win at Barcelona, dealing the Spanish side its first home defeat in the Champions League in seven years.
Ronaldo converted spot kicks for Juventus’ 13th-minute opener and a third goal early in the second half after US midfielder Weston McKennie doubled the advantage in the 20th.
Messi and Ronaldo briefly embraced with one arm behind each other’s back and exchanged a few words before kick-off at a Camp Nou that remains empty because of coronavirus restrictions.
Juventus clinched first place in group G on goal difference with the two sides finishing level on 15 points. Both teams had already qualified for the knockout round prior to the match.
Barcelona’s record of 38 home games without a loss in Europe’s top-tier tournament began in September 2013.
RB Leipzig scored twice in the opening 13 minutes but had to survive a late comeback from Manchester United in a 3-2 win that sent them into the knockout stage and eliminated the English side.
Leipzig got off to a sensational start, stunning the visitors in the second minute with Angelino’s powerful shot from a Marcel Sabitzer cross.
Chelsea’s Jorginho converted a penalty as a much-changed side were held to a 1-1 draw by Russians Krasnodar at Stamford Bridge in their final Champions League group E game with nothing at stake.
Frank Lampard’s side had already secured top spot and Krasnodar the Europa League qualifying place by finishing third, but the match was still played at a breezy tempo in front of 2000 fans as the hosts made 10 changes to their line-up.
Lazio advanced to the knockout stage for the first time in 20 years after drawing 2-2 at home to 10-man Club Brugge.
“We all knew the importance of this match, it wasn’t easy,” Lazio coach Simone Inzaghi said. “We saw a great Lazio performance for 70 minutes and then we suffered, seeing as Brugge didn’t have anything to lose anymore.
“I’m happy to be back among the best 16 in Europe with Lazio, it’s like winning another trophy. We have always played the final stages well.”
Lazio finished second in group F, two points above Brugge and three below already qualified Borussia Dortmund, which won 2-1 at Zenit St Petersburg.
Denys Popov headed the only goal of the game as Dynamo Kyiv secured a spot in the Europa League knockout stage by beating Ferencvaros 1-0.