If I remember rightly a Grimsby fans was being escorted out of the ground when other fans in the railway end got involved with the old bill one of whom threw at punch at a police officer. On top of this there were at least three smoke bombs thrown onto the pitch and at 2-1 up after an attack in the 2nd half their fans threw the ball out of the stadium.
I hope all of these incidents went into the referee’s report. No doubt Grimsby will go unpunished.