"We do not know more about the intentions of the aggressor who was arrested, but this new attack fully legitimizes what we want to do, that is to make the forces placement even more unpredictable, even more undetectable for potential aggressors". The individual was not known to police, " added anor police source.
A knife-wielding man attacked a soldier on patrol as part of an anti-terror operation in Paris but did not cause any injuries, police said.
The knifeman attacked the a soldier at the Chatelet metro station - right in the centre of the city - at about 6.30am.
The unidentified man is said to have rushed at a patrol of soldiers wearing combat uniforms and brandishing assault rifles.
The soldier involved was with the Sentinelle force assigned to protect prominent sites after deadly Islamic extremist attacks in recent years.
On August 9, at least six French soldiers were injured, three of them seriously, when they were hit by a vehicle in a north-western Paris suburb.
He took the attacker under control following the attack.
Including the attacks today in Paris and Burgundy, France has already seen 10 terrorist incidents in 2017.
The suspect apparently shouted references to the Islamic State group while attacking the soldier, Reuters reported, citing French media.
Officers and ambulance staff were present on the spot following reports of the blast.
France has been under a state of emergency since a series of coordinated attacks in Paris in November 2015 which left 130 people dead.