Texas Manhunt: Dangerous Prisoner Escapes Police Custody in Grapevine

This happened last night. I noticed a lot of police in the walmart parking lot when I was there earlier today.

Being transported from Miami to Nevada.
Transport began on a commericial flight but prisoner started making a disturbance. Airline kicked them off the flight in Houston so the police were forced to rent a car. They stopped at the Walmart in Grapevine, TX where the prisoner was some how able to stab one of the officers with his glasses and escape.

[link to crimeblog.dallasnews.com]