House Speaker Nancy Pelosi has said that the House will proceed with legislation to impeach President Donald Trump as early as this week, as she pushed Vice President Mike Pence and the cabinet to invoke constitutional authority to remove him from office, it's reported.

This comes after Trump was widely accused of inciting the violent mob that stormed the US Capitol on Wednesday last week, during which five people are known to have died.

Watch: Joe Biden calls Donald Trump one of the "most incompetent presidents" in US history

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According to the Guardian, Pelosi delivered the ultimatum in a letter to colleagues Sunday, in which she described President Trump as an urgent threat to the nation.

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“In protecting our Constitution and our Democracy, we will act with urgency, because this President represents an imminent threat to both,” Pelosi wrote.

“As the days go by, the horror of the ongoing assault on our democracy perpetrated by this President is intensified and so is the immediate need for action.”

Per the Associated Press, on Monday Pelosi's leadership team will seek a vote on a resolution that calls on Mike Pence and the cabinet to invoke the 25th amendment. A full House vote is expected on Tuesday. Pence and the cabinet would then have 24 hours to respond before the House would move to impeach the President.

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Pelosi said the resolution called on Mike Pence “to convene and mobilize the cabinet to activate the 25th amendment to declare the president incapable of executing the duties of his office."

Meanwhile, Republican senator, Pat Toomey of Pennsylvania, joined Republican Sen. Lisa Murkowski of Alaska in calling for Trump to “resign and go away as soon as possible.”

“I think the president has disqualified himself from ever, certainly, serving in office again,” Toomey said. “I don’t think he is electable in any way.”

Mike Pence and Nancy Pelosi [[imagecaption|| Credit: PA Images]]

Vice President Mike Pence will attend President-Elect Joe Biden's inauguration a senior administration official said on Saturday, per Reuters.

The news comes after current President Donald Trump said that he would not be attending Biden's inauguration himself, taking to Twitter before his permanent ban on the site to write, "To all of those who have asked, I will not be going to the Inauguration on January 20th."

According to Sky News, the decision makes Trump the first President in more than 150 years - and only the fourth ever - to skip his successor's inauguration.

Nancy Pelosi says House will proceed to impeach Trump 'with urgency'