A large-scale manhunt is underway in France after armed men attacked a prison van at a toll booth in Rouen, Normandy on Tuesday.
Two officers were killed, several more were injured, and prisoner Mohamed Amra escaped in the ambush.
The 30-year-old, known as "The Fly", is a convicted burglar and a suspect in a Marseille kidnapping case.
French Justice Minister Eric Dupond-Moretti has said "everything" will be put in place to "hunt down the perpetrators of this revolting crime".
Video by Ian Aikman.