Violence erupted on Glasgow's city centre ahead of the Rangers v Celtic game which saw the Hoops clinch the cup in a nail biting penalty shoot-out.
However the excitement of the December 15 game was already marred by horror scenes in the city's Argyle Street before the match when gangs of Rangers and Celtic yobs rampaged in the city.
However the club reminded fans that the suspended one-match ban remains in place and any future pyrotechnics events would leave an "extremely high risk" of it being triggered down the line.
Police had been hunting 19 people involved in the violence and today confirmed four men, aged 23, 26, 27 and 28, were arrested from the Glasgow and South Lanarkshire areas.
The Hoops have a suspended one-match ban hanging over them over the use of pyrotechnics, which was assumed would be initiated after a fan threw a green smoke bomb onto the pitch during the defeat to Aston Villa.
