Scottish Football Association chief executive Stewart Regan has slammed supporters who invaded the pitch following the Scottish Cup final between Rangers and Hibernian at Hampden Park.
Ugly scenes at full time marred an otherwise entertaining afternoon of football, as Hibs scored in added time to earn a 3-2 victory and secure some rare silverware.
Rangers released a statement after the match in which they claimed that a number of their players and coaching staff had been "assaulted" by opposition fans, and called for immediate action from the Scottish governing body.
SFA chief Regan has now revealed that an investigation is underway, in liaison with Police Scotland, to get to the bottom of the matter.
"The Scottish FA is appalled by the scenes of disorder on the field immediately after full time and at the contemptible behaviour that ensued," he said in a statement. "What should have been an historic, memorable Scottish Cup final will now, sadly, be remembered for all the wrong reasons.
"Police Scotland and the stadium management initiated a Crisis Liaison Group as soon as the disorder began and we thank them for containing the situation as quickly as possible.
"The Scottish FA, along with Police Scotland and the stadium management have initiated a full investigation into the scenes that unfolded to understand how such a volume of supporters were able to enter the field."
Hibernian had lost each of their last 10 Scottish Cup finals prior to today's match, ending a 114-year hoodoo with their dramatic win.