The doctoral student who allegedly attacked police officers outside Notre-Dame Cathedral in Paris on Tuesday while yelling, "This is for Syria" is a journalist from Algeria who pledged his allegiance to ISIS, police said.
Isis did not claim responsibility for Ikken's attack, which followed atrocities that have killed around 240 people in France since the start of 2015.
Police said they found a video in Mr Ikken's lodgings at a student residence in the northern outskirts of Paris in which he claimed allegiance to Islamic State.
The suspect said, "This is for Syria", according to French Interior Minister Gerard Collomb, reported CNN.
It is part of the US-led worldwide coalition against the self-styled Islamic State terrorist group and has conducted airstrikes against militants in Syria.
The man shouted "this is for Syria" during the attack, the interior minister said.
A day after an attack on a policeman at Notre Dame Cathedral in Paris, the presidential Elysée palace announced the commissioning of that military entity called the National Counterterrorism Center.
The injured police officer meanwhile described how he thought he was going to die as he was assaulted in front of the world-famous landmark, before one of his colleagues shot the assailant.
Farid Ikken, 40, is in hospital recovering from bullet wounds.
Florian once headed France's DST regional intelligence service that was disbanded under former president Nicolas Sarkozy. It will include some 20 people representing the various security services and operate 24/7. Government spokesman Christophe Castaner said the man had "never shown any sign of radicalisation" before the attack.
Then in July a year ago, a radicalised Tunisian man drove a lorry at high speed through a Bastille Day fireworks display on the Nice waterfront, massacring 86 people.
Pot'Vin-Gorman said she heard three gunshots before seeing the attacker, dressed in a blue jacket and blue jeans, lying on the ground about 30 meters (100 feet) outside the cathedral.
But he said the police response was "immediate and effective".
His thesis director, Arnaud Mercier, told broadcaster BFM that the alleged attacker spoke Swedish, Arabic and French and that his resume stated he had worked as a journalist in Sweden and Algeria. Police shot and killed the attacker in that situation.
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