The U.S. military says it is committed to "a fair and equitable process" in the case of national security leaker Chelsea Manning and other prisoners accused of breaking rules at the military prison at Fort Leavenworth.

The response comes a day after Manning's lawyer disclosed that Manning could be placed in solitary confinement indefinitely for allegedly having a copy of Vanity Fair with Caitlyn Jenner on the cover and an expired tube of toothpaste, among other things.

In a statement issued Thursday, Army spokeswoman Tatjana Christian says Manning's case is pending before a disciplinary board, which is "a common practice in correctional systems to hold prisoners accountable to facility rules."

The former intelligence analyst was convicted in 2013 of espionage for sending classified documents to WikiLeaks while working in Iraq.