Those inmates, and other Texas prisoners, told the group that sexual slavery "is commonplace in the system's most dangerous prison units."

Examined in prison unit and released to police custody.

MacDonald was then moved from the general federal prison unit into a prison hospital after experiencing chest pains.

"Eliminating the prison unit is a big thing," she said.

Among them: Inmate smoker complains about secondhand smoke in the prison unit.

"Without an identification card he cannot enter a prison unit."

He is sent to a prison unit working on the planet where the Human-Chinger war continues.

Since then, two more groups of prisoners, who applied for admission from other prison units, increased participation to 80 inmates.

Supermax is a type of high-security prison or prison unit.

He is now in a prison psychiatric unit facing a possible life sentence under the "third strike" rule for a minor crime.