Radouane Lakdim, who authorities have named as the 26-year-old attacker responsible for the death of at least three people in southwest France.
There was another terrorist attack in Cambrils before five suspects were shot dead, authorities have confirmed.
The alleged terrorists were in an Audi A3 and apparently knocked down several people before coming across a police patrol and a shoot-out ensued.
‘Nineteen people are killed and 50 injured in terrorist attack as ‘nail bomb near the exit’ explodes, ripping into teens leaving packed Ariana Grande gig
Engaged for a period of one to five years, the reservist, aged at least 17 years-old may be required to perform the same tasks as the military.
The reserve will relieve stretched security forces who have amassed overtime following three major Islamic militant attacks in France since January 2015.
Sources close to the inquiry said the perpetrator was a local 30-year-old career criminal who was born in Tunisia before moving to France.
Three people have died after explosions at the Stade de France during the friendly between France and Germany
MAN BEHEADED IN FRENCH TERROR ATTACK
Wanted : Hayat Boumedienne