Hearts' title celebration could be at risk after John Swinney warned 'landmark events' in the Scottish football calendar are hanging in the balance.
The Deputy First Minister slammed Rangers for a lack of leadership as thousands of fans took to the streets of Glasgow after Steven Gerrard's side clinched the Premiership crown.
Nicola Sturgeon also stuck the boot into the Ibrox side and warned she needs reassurances before giving the upcoming Rangers vs Celtic clash the green light to avoid a similar scenario playing out.
But Swinney insisted it's not just the Old Firm derby that's at risk, but other 'landmark' fixtures on the horizon including the Hearts' potential promotion party as the Tynecastle side are on the verge of clinching the Championship.
Sturgeon said she would need to engage in talks over the course of this week before she arrived at a final decision for the Glasgow Derby on March 21 and any other future matches.
She said: "In terms of future fixtures, I said in my opening remarks, there's a variety of discussions happening over course of this week, including one between myself and the chief constable later today.
"We will report back on those in due course, certainly before the scheduled Old Firm match on the March 21
"The reason why we've tried to keep elite sport and football generally going, is not for the benefit of the elite sports people but for the fans.
"Everyone is being deprived of so much right now that the ability to watch a football match and cheer on your team on the television should be something that people should have the ability to do.
"But a minority can't be allowed to act irresponsibly.
"I hope we don't have to spoil that for the majority but we will have to assure ourselves that there will be no repeat of the scenes that we saw at the weekend.
"That, frankly, is still very much work in progress."
