Newcastle have vowed to take 'the strongest possible action' against anyone involved in discriminatory behaviour following an allegation of a racist gesture made towards Tottenham fans.
The club and Northumbria Police are investigating a complaint in the wake of Sunday's Premier League fixture at St James' Park, which the visitors won 3-2.
A statement from Newcastle read: 'Newcastle United is aware of an alleged racist gesture made by an individual towards Tottenham Hotspur supporters inside St James' Park during Sunday's match. An investigation is under way and the police have been made aware.
'Our message is clear - football is for everyone.