Stewart Regan, Scottish FA chief executive:
"In discussions with Neil Doncaster this morning, the Scottish Premier League have confirmed they have initiated an investigation into the unsavoury events at Tynecastle last night. I am also aware that Heart of Midlothian are carrying out their own review of internal security measures at the club and have agreed to co-operate fully with both the police and the football authorities.

"I reiterate my condemnation of this blight on the image of Scottish football and expect to see robust plans in place to protect players and officials at all times."