Judges Amy Coney Barrett, Barbara Lagoa and Amul Thapar are being seriously considered by President Trump for nomination to fill the seat on the Supreme Court vacated by the death of Justice Ruth Bader Ginsburg, according to sources familiar with the process.

An announcement on the nominee could come as early as Monday or Tuesday.

When President Trump learned Friday night that Justice Ruth Bader Ginsburg had died, he told reporters she was an "amazing woman." Later, in an official statement, he called her a "titan of the law." And while Senate Majority Leader Mitch McConnell, R-Ky., wrote in a statement that he would bring a vote for a new justice to the floor, Trump did not weigh in.

President Trump said it was a "situation that has to be."

A month after he declared the coronavirus pandemic a national emergency, Trump explained from behind the podium of the White House press briefing room on April 13 that the 2020 census had to be given more time.

Updated at 10:56 p.m. ET

President Trump called Supreme Court Justice Ruth Bader Ginsburg a "titan of the law" in a statement late Friday night on her death.

"Renowned for her brilliant mind and her powerful dissents at the Supreme Court, Justice Ginsburg demonstrated that one can disagree without being disagreeable toward one's colleagues or different points of view," the statement said.

President Trump, who called Justice Ruth Bader Ginsburg "a titan of the law," will be able to pick a successor for her from a list of nearly four dozen names that he updated Sept. 9.