The U.S. attorney in Manhattan is not commenting after he was on a list of prosecutors asked to submit resignation letters.
It was not immediately clear Friday if Preet Bharara must resign.
He met in November with then President-elect Donald Trump and was asked to stay on.
Bharara has made public corruption and insider trading an emphasis since President Barack Obama appointed him midway through 2009.
With a quick wit and a steady stream of public appearances, Bharara has been one of the more charismatic prosecutors to lead one of the busiest offices of federal prosecutors in the country.
The prosecutor was once lauded on the cover of Time magazine as the man who is "busting Wall Street." More recently, he's successfully prosecuted over a dozen state officeholders.
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