Preet Bharara, a U.S. attorney for the Southern District of New York, is refusing the Trump administration's demand to resign, according to multiple reports Saturday.

Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE on Friday asked 46 attorneys appointed by former President Obama to submit their resignations, including Bharara.

"HOLDOVER: Bharara is not submitting his resignation, according to several ppl briefed - WH not responding to what they'll do next," the New York Times' Maggie Haberman tweeted Saturday.

CNN's Jake Tapper also reported that Bharara was refusing to resign.

Brian Kolb, the New York State Assembly's Republican leader, tweeted his support of Bharara in the wake of the reports.

HOLDOVER: Bharara is not submitting his resignation, according to several ppl briefed - WH not responding to what they'll do next. — Maggie Haberman (@maggieNYT) March 11, 2017

BREAKING: US attorney Preet Bahrara will not submit resignation despite DOJ request- @LauraAJarrett @jaketapper report — Adam Levine (@cnnadam) March 11, 2017

Good for Preet, he is doing the job he was appointed to do! https://t.co/4WqOgRfZht — Brian Kolb (@GOPLdrBrianKolb) March 11, 2017

...this according to source familiar w meeting and what @PreetBharara told reporters afterwards. WH no comment yet on why change of mind... — Jake Tapper (@jaketapper) March 11, 2017

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The Justice Department (DOJ) announced Friday that Sessions called for the former attorneys to resign. Of the 93 U.S. attorneys, 46 remain from the past administration, according to the DOJ.

The call for resignations applies to all Senate-confirmed U.S. Attorneys, including Bharara.

It came as a surprise, as Bharara reportedly met with Trump after the election and agreed to remain in his position during the Trump administration. Sessions also asked him to stay, the prosecutor told The New York Times.

According to an exclusive report by The Daily Beast late Friday, Bharara told his section chiefs that he’d yet to submit the requested letter and may instead challenge Sessions to fire him.

Bharara's office is working through an investigation of New York City Mayor Bill de Blasio and about to start the trials of two close allies to New York Gov. Andrew Cuomo.

Bharara built a reputation in New York by going after big banks and Wall Street.

He's prosecuted nearly 100 Wall Street executives and brought legal challenge to the four largest banks in the U.S. He also closed a multi-billion dollar hedge fund as part of an insider trading settlement.