The Football Association is set to speak to both Newcastle United and Sheffield Wednesday after reports of overcrowding in the away end of Hillsborough on Saturday.
Premier League high-flyers Newcastle were knocked out of the FA Cup at the third-round stage by the League One side on Saturday night, losing 2-1 in Sheffield.
However, the match itself has been marred by claims across social media during and after the game from visiting fans who allege there were issues at the Leppings Lane end of the stadium.