The gunman killed after shooting dead a policeman on the Champs Elysees has been named by the Paris prosecutor as Karim Cheurfi, a convicted criminal.
He used a Kalashnikov assault rifle to kill the police officer with two bullets to the head, François Molins told journalists in the French capital.
A note defending so-called Islamic State was found near his body.
Candidates in Sunday’s presidential election have been accused of exploiting the attack politically.
Cheurfi had four criminal convictions, the prosecutor said.
Friday is the last day of campaigning before Sunday’s presidential election.
The killer spoke about wanting to kill police officers earlier this year but he had no apparent link to Islamist radicalism, Mr Molins said.
IS has said one of its “fighters” carried out the attack.