Watch: How the France prison van ambush unfolded

A large-scale manhunt is under way 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