Partrick Harvie has today added to speculation over Humza Yousaf leadership as the First Minister as it was confirmed the Bute House Agreement is over.

The Scottish Greens co-leader hit out furiously over the ending of the pact by Mr Yousaf this morning.

In a hastily arranged press conference in Holyrood, Mr Harvie was asked if his party would support the SNP government's budget next year.

He replied: "Do you think the current government will be in place by the time of the next Budget?"

Earlier today one senior SNP figure told The Herald before it had been confirmed the agreement was over that his leadership would be in doubt if it came to an end.

"If these reports are true that the BHA is over it will be hard for Humza to carry on.

"He said the BHA was worth its weight in gold." they told the Herald.

But at a press conference this morning at the First Minister's official residence of Bute House he insisted his decision to end the pact would be a "new beginning" for ” for his SNP minority Government and that he would carry on in his roles.

Referring to the Bute House Agreement, the First Minister said: “It is no longer guaranteeing a stable arrangement in Parliament, the events of recent days have made that clear, and therefore, after careful consideration, I believe that going forward it is in the best interest of the people of Scotland to pursue a different arrangement.

“That is why, following a discussion with my Cabinet this morning, I have formally notified Patrick Harvie and Lorna Slater that I am terminating the Bute House Agreement with immediate effect.”

He said the day marks a “new beginning for this SNP Government”.

The move means Green co-leaders Lorna Slater and Patrick Harvie are no longer part of the Scottish Government, and the SNP will now operate as a minority administration.

The end of the deal comes amid growing tensions between the two pro-independence parties – with Greens left furious after the Scottish Government last week abandoned a key climate change target.

Greens were also unhappy at the decision to pause the prescription of puberty blockers to new patients at Scotland’s only gender services clinic for young people in Glasgow – a decision taken in the wake of the Cass Review in England and Wales.

But it was Mr Yousaf who called time on the deal, saying it had “served its purpose”.

But Ms Slater condemned the move, saying: “This is an act of political cowardice by the SNP, who are selling out future generations to appease the most reactionary forces in the country.

“By ending the agreement in such a weak and thoroughly hopeless way, Humza Yousaf has signalled that when it comes to political co-operation, he can no longer be trusted.”

Ms Slater accused the SNP of having “broken the bonds of trust with members of both parties” and said it had “betrayed the electorate”.

The Greens had planned to hold a vote on the future of the Bute House Agreement – which was signed when Nicola Sturgeon was first minister.

But before that could be held, the SNP acted to call time on the arrangement.

Ms Slater insisted the Green co-leaders had been “confident” their members would have backed staying in Government in the vote, and “continuing our work for Scotland”.

But some high-profile members of the SNP, including former leadership candidate Kate Forbes and party stalwart Fergus Ewing, have previously questioned the arrangement – prompting Ms Slater to claim the “most reactionary and backwards-looking forces within the First Minister’s party have forced him to do the opposite of what he himself had said was in Scotland’s best interests”.

She insisted: “By contrast, we as co-leaders of the Scottish Greens were prepared to put our own political careers on the line with our members, to defend our achievements in government, despite enduring all that SNP backbenchers and others threw against us. ”

Continuing her attack on the First Minister, Ms Slater added: “What a pity he didn’t have the fortitude or the bravery to do the same.”

Speaking about the SNP, she said: “If they can’t stand up to members of their own party, how can anyone expect them to stand up to the UK Government at Westminster and defend the interests of Scotland?”

In response to the end of the powersharing deal, Scottish Labour deputy leader Dame Jackie Baillie said: “This chaotic and incompetent Government is falling apart before our eyes.

“Humza Yousaf is too weak to hold his own Government together and he is too weak to deliver for Scotland.”

Scottish Conservative chairman Craig Hoy said: “The collapse of this toxic coalition is an utter humiliation for Humza Yousaf, who hailed it as ‘worth its weight in gold’ and continued to back it to the hilt right until the end.

“The First Minister’s judgment is so poor that he couldn’t see what a malign influence the anti-growth Greens have been in Government and his authority so weak that he was bounced into this U-turn by his own MSPs.”

Scottish Liberal Democrat leader Alex Cole-Hamilton said the end of the agreement had left the SNP and Greens “at each others’ throats”.

He added: “They are now trying to blame each other, but in reality they have both failed the people of Scotland.”

Scottish Greens co-leader Lorna Slater confirmed in a statement this morning the agreement had ended.

She said: “This is an act of political cowardice by the SNP, who are selling out future generations to appease the most reactionary forces in the country. 

Read more: "Political Cowardice": Greens turn on Scottish Government as political pact scrapped

“Voters deserve better, Scotland deserves better. Scottish Green voters certainly deserve better. 

"They have broken the bonds of trust with members of both parties who have twice chosen the co-operation agreement and climate  action over chaos, culture wars and division. They have betrayed the electorate. 

"And by ending the agreement in such a weak and thoroughly hopeless way, Humza Yousaf has signalled that when it comes to political cooperation, he can no longer be trusted. 

"In just a few weeks time our own members were to have a democratic say on endorsing the co-operation agreement.

"We are confident they would have supported us in continuing our work for Scotland, as they have done at every turn. 

"Neither they nor SNP members will have that opportunity. Instead, the most reactionary and backwards-looking forces within the First Minister’s party have forced him to do the opposite of what he himself had said was in Scotland’s best interests. 

"By contrast we as co-leaders of the Scottish Greens were prepared to put our own political careers on the line with our members, to defend our achievements in government, despite enduring all that SNP backbenchers and others threw against us. 

"What a pity he didn’t have the fortitude or the bravery to do the same. If they can’t stand up to members of their own party, how can anyone expect them to stand up to the UK Government at Westminster and defend the interests of Scotland? 

"We want, we demand, a fairer greener Scotland. We believed the Bute House Agreement would speed up that process, only to be let down by the SNP time and time again - on council tax, on oil and gas, on 2030  and most obviously, again today. 

"I appeal to those SNP members who do care about climate, trans rights, independence and our country to consider if they are in the right party for their values, or if their home should be with us as we prepare to step up our defence of the planet in opposition. 

"Finally, to all those who will feel hurt and betrayed today, know this: our resolve is absolute, we will not abandon you as the SNP have, we will fight for your future with every breath we take. 

The Bute House Agreement was dropped following an emergency Cabinet meeting at Bute House in Edinburgh on Thursday morning.

Scottish Green co-leaders Patrick Harvie and Lorna Slater were seen to walk out of Bute House before 8.30am.

Their party said last week it would hold a vote on the future of the Bute House Agreement in which the Greens were junior partners to the SNP in government.