A Leicester fan was arrested after being involved in an altercation with Nottingham Forest's players in the Reds' stunning 4-1 win over the Foxes in the FA Cup at the City Ground on Sunday.
In the first game between the East Midlands rivals in eight years, Forest went 3-0 up against the cup holders inside the opening 32 minutes.
After Joe Worrall headed in the Reds' third goal, one Foxes supporter made their way onto the pitch to where the players were celebrating.
The individual briefly managed to become part of the celebratory huddle before being pushed away by Forest's players.