Police found a Syrian passport on one attacker, and evidence that some came via Belgium

By Vivienne Walt ~ PARIS

As Paris reeled from the worst terror attacks since World War II, French officials said Saturday that at least one of the seven assailants—now all dead—had a Syrian passport in his possession, and that the men who stormed the packed Bataclan concert hall, where 89 of the 129 people who have so far died were killed, had driven there in a VW Polo car rented in Belgium with a Belgian license plate. All this suggested that the coordinated assault on Friday night involved a network stretching way beyond France.

More worrying, one of the dead attackers who stormed the concert hall was a French citizen, aged 30, who was well known to police, with a criminal rap sheet extending between 2008 and 2010. “He was considered a radicalized person and had a security report,” Paris prosecutor François Molins told reporters on Saturday night. Molins said the attackers were comprised of three coordinated groups, though he did not name the men involved, and did not say whether he believed any others were still on the run.

For many French, the admission that police had suspected one of the attackers of jihadist views echoed the Charlie Hebdo attacks in January. The three gunmen who killed 17 people in a series of attacks in Paris then were all found to have been known to French police for their militancy.

Speaking in Turkey at the start of a 10-day world trip, President Obama called the attacks an “attack on the civilized world” and pledged to stand with France as it hunts for more culprits. “We stand in solidarity with them in hunting down the perpetrators of this crime and bringing them to justice,” Obama said. “The killing of innocent people based on a twisted ideology is not just an attack on France, not just an attack on Turkey, it is an attack on the civilized world.”

European Union officials said they will hold special meeting on the Paris attacks next Friday, the Associated Press reports.

The Syrian passport discovered on the body of one of the three suicide bombers at the Stade de France on Friday night, belonged to a 25-year-old man who had crossed into Greece on October 3, landing on Leros island, a similar journey to that taken by hundreds of thousands of Syrians who have fled to Europe since early summer, the majority crossing by boat from Turkey. “We will continue the painstaking and persistent effort to ensure the security of our country and Europe under difficult circumstances,” Greek Citizen Protection Minister Nikos Toskas said in a statement on Saturday.

Molins said the attackers had mounted their terrifying assault using “war-type weapons” including .752-cal. Kalashnikov rifles and explosive belts containing TNT mixed with nitrogen peroxide and detonated with push buttons. He said closed-circuit cameras had led police to two vehicles used in the attacks, including the Belgian rental car. “This is only the beginning of the investigation, we are collecting testimony,” Molins said. “At this point it is important to keep a number of the investigations secret.”

In Paris late Saturday night, the lights on the Eiffel Tower went dark to mourn the victims.

French cabinet ministers huddled in crisis meetings with President François Hollande all Saturday. Flags flew at half mast, and there are three days of national mourning, with school outings cancelled and many public buildings shut. Interior Minister Bernard Cazeneuve said on television that under the national state of emergency Hollande declared on Friday night, French magistrates now have the power to declare curfews in specific areas or cordon them off, and that police could arrest “any individual who might threaten the actions of police authorities.” The French Army has deployed 1,000 additional troops to patrol Paris streets and stations, he said.

Hollande on Saturday termed the attack an “act of war” by ISIS, tough words that raised the possibility that France will greatly intensify its military strikes against the terror group. That phrase was an escalation from the mostly measured tones French officials have adopted over much of this year, as they attempted to focus more on surveillance and intelligence gathering about French jihadists, rather than risk provoking more attacks by mounting military action.

Read this story on TIME Magazine.