The lawyer for convicted national security leaker Chelsea Manning says her client faces charges for alleged prison infractions that carry a possible maximum sentence of indefinite solitary confinement.

Defense attorney Nancy Hollander said Wednesday an Aug. 18 hearing is set at the military prison at Fort Leavenworth, Kansas, where the transgender Army private is serving a 35-year sentence. The military had no immediate comment.

The prison charges include possession of prohibited property, including the Vanity Fair issue with Caitlyn Jenner on the cover. She also faces a charge of medicine misuse over an expired tube of toothpaste, and charges alleging disrespect and disorderly conduct.

The former intelligence analyst was convicted in 2013 of espionage and other offenses for sending more than 700,000 classified documents to WikiLeaks while working in Iraq.