Tempers flared after David Scullion's injury-time goal earned Coleraine a draw in Friday's Carling Premiership clash against Crusaders at Seaview.
Timmy Adamson's 59th-minute goal appeared to have earned all three points for the Crues.
After late pressure, Scullion levelled in the 93rd minute and a number of Coleraine fans celebrated on the pitch.
Crusaders manager Stephen Baxter said after the game that keeper Sean O'Neill had been spat at in the closing stages.
After the frantic finish, personnel from both sides got involved in a melee and it took a number of minutes before order was restored and the teams were able to get to the dressing rooms.
Earlier, Coleraine's Leon Knight had been presented with the best chance of the first half with Crues keeper O'Neill making a fine save in the 33rd minute.
The home side took the lead on 59 with Adamson nodding home after David McMaster's surging run down the left flank and superb cross.
In the opening minute of injury-time, Coleraine fans felt that Scullion had been upended in the penalty area by Colin Coates.
However, the equaliser did come two minutes later as Scullion headed past O'Neill.
The unsavoury scenes followed after the final whistle with a good deal of finger pointing and shoving taking place.