Published: Aug 19, 2010 8:11 PM EDT
Updated: Aug 19, 2010 5:11 PM EDT

PHOENIX (AP) - The Arizona Department of Corrections is transferring more than 100 inmates from a privately operated state prison where three inmates escaped July 30.

Corrections Director Charles Ryan says the transfers to other prisons result from tighter restrictions being imposed on which inmates can be assigned to the prison's minimum-and medium-security units.

The three escaped convicts from the medium-security unit in Kingman included two convicted of murder. Authorities have linked some of the escapees to the killing of an Oklahoma couple.

Ryan also says the prison had numerous security flaws that the department's security reviews didn't detect. Those included a faulty alarm system and poor operational practices that led to unstaffing of a perimeter post.