Terrorists inside the prison could be plotting another attack without anyone knowing it, McFadyen said.
A report by the Justice Department's inspector general found the Bureau of Prisons "is unable to effectively monitor the mail of terrorist and other high-risk inmates in order to detect and prevent terrorism and criminal activities."
FLORENCE, Colorado (CNN) -- Two California court cases are raising questions about whether prisoners in the nation's toughest prison, SuperMax, are continuing to commit crimes by smuggling coded messages out of the high-security institution.
The prison employees' union and local officials say the guard force at SuperMax is well below the number employed when the prison opened a dozen years ago, and it has sunk below the minimum manpower levels established a year ago.
Prosecutors asked for the death sentence for Mills and Bingham, but the jury deadlocked on that part of the case, and so both face automatic sentences next week of life without parole.