Rule 9 – Section 2 – Article 6 – Disqualified players and coaches
b. A player disqualified from the game (Rule 2-27-12) must leave the playing enclosure (Rule 2-31-5) under team supervision within a reasonable amount of time after his disqualification. He must remain out of view of the field of play under team supervision for the remainder of the game.
Rule 9 – Section 2 – Article 7 – Removing persons from the playing enclosure
The referee may require game management to remove any person from the playing enclosure (Rule 2-31-5) who he believes poses a threat to the safety of persons subject to the rules or the officials, or whose behaviour is prejudicial to the orderly conduct of the game. The referee may suspend the game (Rule 3-3-3-a) while this takes place.