Transgender Army veteran and WikiLeaks whistleblower Chelsea Manning is being threatened with indefinite solitary confinement in connection to her July 5 suicide attempt.

The American Civil Liberties Union (ACLU) said U.S. Army officials notified Manning of an investigation into her suicide attempt. Three serious charges are being brought against her.

A transcribed charge sheet provided by the ACLU shows that Manning is under investigation for resisting force from the cell move team, possessing prohibited property, and engaging in “conduct which threatens.”

Manning, who was arrested in 2010 for releasing classified government documents to WikiLeaks, is serving a 35-year prison sentence at the United States Disciplinary Barracks at Ft. Leavenworth, Kansas, an all-male maximum security prison.

In 2014, Manning, with the help of the ACLU, the ACLU of the Nation’s Capital, the ACLU of Kansas, and civilian defense counsel David E. Coombs, sued then-Secretary of Defense Chuck Hagel and other Department of Defense and Department of the Army officials for failing to treat her gender dysphoria, a violation of her constitutional rights.

Army physicians had diagnosed Manning with the condition several years prior, according to the lawsuit.

As a remedy, the National Commission on Correctional Healthcare has recommended that inmates like Manning receive medical treatment that follows World Professional Association for Transgender Health (WPATH) standards of care, like providing hormone therapy. Several respected medical organizations, including the American Medical Association and the American Psychological Association, support WPATH recommendations.

Chase Strangio, a staff attorney with the ACLU, said in a statement that the investigation was “deeply troubling” and noted that government continues to deny Manning medical care related to her gender dysphoria condition and her recent suicide attempt.

“Now, while Chelsea is suffering the darkest depression she has experienced since her arrest, the government is taking actions to punish her for that pain. It is unconscionable and we hope that the investigation is immediately ended and that she is given the health care that she needs to recover,” Strangio said.

Along with indefinite solitary confinement, the ACLU said Manning could face reclassification into maximum-security prison, an additional nine years in medium custody for the remainder of her 35-year long sentence, if convicted of the “administrative offenses.”

The ACLU said the Army could also negate any chance for parole.

ACLU spokeswoman Allison Steinberg told Rewire the ramifications Manning faces derive from the Army’s Institutional Offense Policy.

Fight for the Future Campaign Director Evan Greer, whose group collected more than 100,000 signatures last year when the Army threatened Manning with solitary confinement for possessing LGBTQ literature and an expired tube of toothpaste, said in a statement that the U.S. government’s treatment of Chelsea was a “travesty.”

“Those in charge should know that the whole world is watching, and we won’t stand idly by while this administration continues to harass and abuse Chelsea Manning,” Greer said.

Just two days before Manning and her legal team learned of the investigation, she told followers on her verified Twitter account, “Feeling a little bit better every day. Thank you for your mail, your love, and your support. Things will get back to normal soon.”