Stoke City supporters reportedly tried to taunt Manchester United fans by mocking the Munich air disaster of 1958.
Television cameras are reported to have picked up a number of Potters fans spreading their arms out while looking towards the United following during yesterday's 2-0 defeat to the Premier League leaders.
The gestures were made after United fans chanted 'what the f***ing hell was that?' after Stoke supporters gave a minute's applause in tribute to young fan Kameron Bourne, who passed away last week, according to the Daily Mail.
Stoke fans are believed to have sung chants for around 30 seconds about the Munich air disaster, which resulted in the death of 11 United players and staff and 23 passengers in total.