A former National Security Agency contractor serving a five-year prison sentence for leaking classified documents about Russian meddling in the 2016 presidential election, is petitioning President Trump for an early release.

A lawyer for Reality Winner announced at a Monday news conference in Dallas that she had submitted 4,500 letters of support of her client to the Trump administration's Office of the Pardon Attorney.

"Our country was attacked by a hostile foreign power," attorney Alison Grinter said, as the Intercept reported. "Our national healing process cannot begin until we forgive our truth-tellers and begin the job of rebuilding what was taken from us: election security, accountability for those who endeavor to undermine our democracy and safeguarding the American right to government by and for the people. None of this can begin in earnest while we are still punishing those who tell us the truth."

Former National Security Agency contractor Reality Winner is asking for early release in the middle of her five-year prison sentence for leaking classified documents to the media on Russian interference in the 2016 presidential election. (Justice Department, File)

Winner was arrested in 2017 and charged under the Espionage Act for removing classified material from a government facility and mailing it to a news outlet, according to the Justice Department.

The arrest came after the Intercept published a June 2017 story detailing how Russian hackers attacked voting software and engaged in email "spear-phishing" attacks against local election officials at the end of October or beginning of November 2016.

Winner, an Air Force veteran, worked as a contractor for the NSA with a Top Secret clearance with Pluribus International Corporation at a federal facility in Georgia. She printed out a sheet of paper with classified information and mailed it to the news outlet, the Justice Department said.

She was handed down her five-year prison sentence in August 2018 after admitting to violating the Espionage Act. Her petition noted that she was not working with a foreign entity to conspire against her country, sought no compensation and acted only out of a desire to inform the public.

After her sentencing, Trump tweeted it was "'small potatoes' compared to what Hillary Clinton did!"

An error occurred while retrieving the Tweet. It might have been deleted.

The petition stated that Winner's "continued incarceration is costly, unnecessary to protect the public, burdensome to her health and wellbeing, and not commensurate with the severity of her offense."

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It emphasized Winner's military service and that she did not receive adequate medical treatment in prison for depression, anxiety and her eating disorder, the Intercept reported. She was diagnosed with bulimia during her stint as a cryptologist translating the intercepted communications of terror suspects in a drone program, the outlet added.

The Justice Department did not immediately respond to Fox News' request for comment.

Fox News' Brooke Singman contributed to this report.