According to the Europe 1 television channel, the attacker attempted to assault three police officers on the forecourt of the cathedral. One of the officers shot the attacker twice, wounding him.
We're trapped in Notre-Dame de Paris, something is happening outside. Police sirens can be heard. They are not letting anyone in or out— Matthew CurrieHolmes (@mch2k) 6 июня 2017 г.
The assailant was reportedly hospitalized. The police urged the public to stay away from the area. Franceinfo said there might have been two explosions causing crowd movement.
the "attacker" is under medical care and custody; Notre Dame visitors(900 people) are held in the cathedral for security reasons.— Chewbakaw (@chewbakaw) 6 июня 2017 г.
The attack was declared an act of terrorism.