The FA and South Yorkshire Police will speak to officials from the two clubs, as well as the Sunday Times, which spoke to a number of fans who reported overcrowding at the game.
On Sunday, January 8th, 23rd, UK.
According to a report, away fans were concerned about overcrowding at Saturday's FA Cup third round tie at Wednesday.
The lower tier of the Leppings Lane End stand has been raised by supporters.
Some fans think overcrowding occurred when supporters came through a tunnel.
There are spare seats in areas of the lower terrace and the central area of the stand.
Fans were concerned about a lack of stewards on duty.
There was a crush at the Leppings Lane End during the 1989 FA Cup semi-finals, which resulted in the deaths of 97 people.
Sky Sports News reached out to the police departments.