Manchester United will review their security procedures at Old Trafford after three pitch invaders attempted to approach Cristiano Ronaldo during the Champions League group-stage defeat against Juventus, sources told ESPN FC.
United are waiting to hear whether they will be hit with a UEFA charge after three fans made it onto the pitch — one during the game and two after the final whistle.
In the meantime, the club are set to hold an internal investigation to determine how the incidents happened.
Greater Manchester Police said a man in his 40s was arrested at Old Trafford on suspicion of pitch invasion and spent the night in custody.
All three supporters appeared to be attempting to get close to Ronaldo, the former United star who helped Juventus to a 1-0 win on Tuesday night.
UEFA will wait for the reports before deciding whether to charge United. In December 2014, Tottenham were fined €15,000 after three supporters made it onto the pitch during a Europa League match against Valencia.