Police announced on Saturday that they are investigating claims of racist abuse after Manchester City's Aleksandar Kolarov became involved in a row with a supporter at St James' Park.
Northumbria Police said they had received a complaint after City's 3-1 win over Newcastle United in the Premier League.
"Northumbria Police has received a report of racist language having been used at the St James' Park stadium during the Newcastle United v Manchester City match today (Saturday)," said a police spokesman.