Manchester United and Leeds United supporters “highly condemned” shouts invoking historic tragedies during Sunday’s Premier League match at Elland Road.
Shortly before halftime, rival fans exchanged shouts concerning the Munich Air Disaster and the deaths of two Leeds fans in Istanbul in 2000.
Manchester United triumphed 2-0.
In a joint statement, both teams stated supporters’ actions was “absolutely unacceptable”.
“Both clubs strongly condemn chanting from both sets of fans regarding historic tragedies at today’s game,” they said.
“Such behaviour is completely unacceptable and we will continue to work together with our respective fan groups and the Premier League and other authorities on eradicating it from football.”
The Premier League also condemned the chanting, saying: “The league is treating the issue of tragedy chanting as a priority and as a matter of urgency.”
The Munich Air Disaster took place in February 1958, when a charter plane crashed, claiming the lives of 23 people, including eight Manchester United players and three officials.
Violence ahead of the 2000 Uefa Cup semi-final in Istanbul between fans of Leeds and Galatasaray led to two Leeds fans being stabbed.
