REYKJAVIK, Iceland – Iceland’s Prime Minister Sigmundur David Gunnlaugsson has resigned, his party said on Tuesday, the first major political casualty to emerge from the leak of the so-called Panama Papers financial documents.

“The prime minister told (his party’s) parliamentary group meeting that he would step down as prime minister and I will take over,” the Progressive party’s deputy leader and Agriculture Minister Sigurdur Ingi Johannsson told a live broadcast.

Gunnlaugsson had earlier today asked the president to dissolve parliament as his government reeled from a political crisis over the Panama Papers, but the president refused.

President Olafur Ragnar Grimsson, who cut short a US visit to return to Reykjavik earlier today to deal with the crisis, told a televised press conference he wanted to consult the government’s junior coalition member before making a decision.

Grimsson said a meeting with the premier “resulted in me refusing to sign a declaration to dissolve parliament nor make any promises to the prime minister that I would agree to that before I knew and had conversations with leaders of other parties about their stand.”

Refusing a request to dissolve parliament was unprecedented in Iceland, political observers said.

Prime Minister Sigurdur David Gunnlaugsson, 41, had been under pressure to resign since leaked financial documents showed that he and his wife Anna Sigurlaug Palsdottir owned an offshore company in the British Virgin Islands and had placed millions of dollars there.

The leftwing opposition on Monday presented a motion of no-confidence in Gunnlaugsson.

Gunnlaugsson had said earlier today he would seek the dissolution of parliament if he did not get the support of the junior coalition member Independence Party.

Independence Party leader Bjarni Benediktsson, who is finance minister, was also named in the leaked “Panama Papers”.

Thousands of demonstrators protested outside parliament in Reykjavik on Monday, throwing eggs and yoghurt at the building and calling on Gunnlaugsson to step down.

Gunnlaugsson’s company, named Wintris Inc and acquired in 2007, was intended to manage his wife’s inheritance from her wealthy businessman father, according to the Panama Papers.

The prime minister sold his 50-percent share to his wife for a symbolic sum of $1 at the end of 2009.

But when he was elected to parliament for the first time in April 2009, as a member of the center-right Progressive Party, he neglected to mention his stake in his declaration of shareholdings.