At least 13 people, including a child, were injured on Friday when a suspected explosive device went off near a bakery in the central French city of Lyon, local officials said.
The suspect was captured on security video leaving a case in front of a bakery shortly before the explosion occurred at around 5:30 p.m. local time.
Anti-terrorist prosecutors have taken over the investigation and security has been boosted in public places.
French President Emmanuel Macron called the explosion an “attack,” confirmed that there are had been no fatalities and sent “a thought for the injured and their families.”
France has been hit by a wave of terrorist attacks in recent years, beginning with the 2015 attack on the offices of the Charlie Hebdo satirical magazine which was followed by the attack on the Hyper Cacher kosher supermarket in which four people were murdered.
The Islamic State (ISIS) has claimed some of the attacks on France in recent years. The biggest of these attacks was the November 2015 Paris attack in which 129 people were murdered.
The country has been under a heightened alert in recent years in the wake of the attacks.