Prison Escape

Randy Halprin was part of a gang of prisoners who fatally shot a police officer in 2000 after they escaped from prison

Porfirio Duarte-Herrera was convicted in 2010 of killing a hot dog stand vendor using a motion-activated bomb atop a car parked at the Luxor casino

Casey White and Vicky White may have planned his escape over the phone, but authorities must listen to each call before making a determination

The men would be in their 90s if they're still alive

The agency said if it must transport an inmate for an emergency medical appointment or for release, it will have more security

Officials accused a security guard of helping them escape and driving them off the premises

The vehicle was found in an impound lot in Tennessee, where it sat for nearly a week before authorities realized they had it

Authorities are investigating all possibilities in the pair’s disappearance, including whether the officer assisted the inmate in escaping

The two convicted felons went missing last week from a medium-security prison

Officers arrested Robert Brown and Christopher Osteen more than two days after they escaped from Northwest Correctional Complex

Police say the inmate was found trying to hide in the attic space of a garage

The inmate says he had "nothing to do with" the deaths of his ex-girlfriend and her friend

The suspect was found hiding inside a 55-gallon trash can in Texas