Newcastle's match with Sunderland was paused early in the second half because of reports of discriminatory abuse from the crowd towards Sunderland player Lutsharel Geertruida.
Referee Anthony Taylor briefly stopped the Premier League match for three minutes in line with the competition's on-field anti-discrimination protocol.
In the 52nd minute, with play already stopped as Newcastle player Sven Botman was receiving treatment, Sunderland captain Granit Xhaka ran over to speak to Taylor.
Moments later Taylor spoke to both sets of coaching staff, Geertruida and Xhaka before restarting the game.