At least one person was killed and four others were injured, two of them critically, in a mass attack in central Paris. The perpetrator of the incident is also dead.
The incident took place in the Opera district in central Paris.
The perpetrator attacked the crowd with a knife, spreading panic. He fell dead a few minutes later, under hitherto unexplained circumstances.
Eyewitnesses described the incident and the panic created by the gunman.
Eyewitnesses say police initially tried to stop the assailant - but then fired twice at him.
The French authorities treat the incident as terrorist.
Islamic State claimed responsibility for the bloody attack.