"Nobody can be happy, and certainly not me, that someone who has been flagged to security agencies can continue to benefit from such an authorization", Philippe told BFM TV.
The attacker died in the incident.
THIS is the shocking moment a known terror sympathiser is dragged from his auto filled with smoking explosives and weapons after smashing into a police convoy in Paris.
No bystanders or police were hurt.
Guns - including a Kalashnikov - as well as bottles containing gasoline were found in the vehicle, according to French media.
A spokesman for the French interior ministry, Pierre-Henry Brandet, said the driver's auto exploded as he tried to ram a police vehicle. The attack happened about 200 yards from Élysée Palace where French President Emmanuel Macron resides.
Interior Minister Gerard Collomb said a auto hit the leading vehicle in a line of police vans as they headed down the Champs-Elysees, near the Grand Palais exhibition hall.
Mr Favereau said he saw a auto blocking the convoy's path and then an implosion in the vehicle.
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Collomb said Monday's attack justified further extension of France's "state of emergency", a heightened security and surveillance regimen that has been in place since November 2015, when Islamic State militants carried out coordinated attacks on a concert hall and cafes across Paris, killing 130.
The Islamic State, through its affiliated Amaq News Agency, claimed responsibility for that attack.
Earlier this month an Algerian man attacked a policeman with a hammer outside Notre Dame cathedral, another key tourist draw, while troops shot dead a man at the capital's Orly airport in March after he attacked a soldier on patrol. "We will also propose a bill allowing to exit from this state of emergency but maintaining high security conditions".
"I saw gendarmes get out of a van, run, break the window" of the vehicle, she said in an interview.
The culprit was killed, said the Ministry of internal Affairs of France.
(AP Photo/Matthieu Alexandre). Police attend the scene on Champs Elysees avenue in Paris, France, Monday, June 19, 2017. The attacker died on the scene where he rammed his auto into a police van, but the police investigating have found that, although he was on a terrorist watch list, the attacker was legally able to acquire numerous weapons.
The van used in the attack was reportedly hired in Wales. And in July a year ago, a radicalised Tunisian man killed 86 people as he rammed a truck through a crowd watching Bastille Day fireworks in the Riviera city of Nice.
Metropolitan Police Commissioner Cressida Dick said "people in the Muslim community, attending prayers, will see their police protecting them in coming days".