Police are investigating after a Newcastle fan exposed himself during the FA Cup tie against Oxford United.
The supporter was pictured on TV and social media celebrating Allan Saint-Maximin’s winner in the 3-2 victory at the Kassam Stadium on Tuesday.
Police said they had received a report of an “exposure incident” but no arrests had been made.
Newcastle said on Wednesday they were aware of footage showing “inappropriate actions” by a supporter.
“We have been asked to assist the police in their efforts to identify the supporter in question and we will provide our full support,” a statement continued.
Newcastle survived a scare against League One Oxford, who came back from two goals down to level at 2-2 and take the game to extra time.
Saint-Maximin’s strike secured the win in the 117th minute to take Steve Bruce’s side into the fifth round of the FA Cup for the first time in 14 years.