PARIS -- French police are hunting for a second fugitive directly involved in the deadly Paris attacks, officials said Tuesday after France made an unprecedented demand that its European Union allies support its military action against the Islamic State of Iraq and Syria (ISIS).
The disclosure of a second possible fugitive came on the same day that France launched new airstrikes on the militants' stronghold in Syria; as Vladimir Putin ordered a Russian military cruiser to cooperate with French on fighting ISIS in Syria and as U.S. Secretary of State John Kerry hinted at a possible upcoming cease-fire in Syria that would let nations focus on fighting ISIS.
French and Belgian police were already looking for key suspect Salah Abdeslam, 26, whose suicide-bomber brother Brahim died in the attacks Friday night that killed at least 129 people and left over 350 wounded in Paris. ISIS militants have claimed responsibility for the carnage.
Seven attackers died that night -- three around the national stadium, three inside the Bataclan concert hall, and one at a restaurant nearby. A team of gunmen also opened fire at nightspots in one of Paris' trendiest neighborhoods.
However, three French officials told The Associated Press on Tuesday that an analysis of the attacks showed that one person directly involved in them was unaccounted for. The officials, who spoke on condition of anonymity because they were not authorized to provide details about the ongoing investigation, said the second fugitive has not been identified.
CBS News' Elizabeth Palmer reports that Tuesday night, the police are looking for yet another man -- a ninth terrorist -- who they've now spotted in surveillance camera video during the attacks on restaurant and cafes.
Surveillance video obtained by The Associated Press indicates a team of three attackers carried out the shootings at a Paris sidewalk cafe, leading police to believe that a second assailant is on the loose.
Previously officials had not specified how many people were involved in the attack on the sidewalk bar on La Fontaine au Roi street.
Surveillance video of the shooting shows two black-clad gunmen with automatic weapons calmly firing on the bar, then returning slowly toward a waiting car, whose driver was maneuvering behind them.
Three French officials, who spoke on condition of anonymity because they were not authorized to comment on the investigation, confirmed that an analysis of the series of attacks on Friday indicated that one additional person directly involved in the assault remains unaccounted for.
The Paris attacks have galvanized international determination to confront the militants.
The French government invoked a never-before-used article of the EU's Lisbon Treaty obliging members of the 28-nation bloc to give "aid and assistance by all the means in their power" to a member country that is "the victim of armed aggression on its territory."
French Defense Minister Jean-Yves Le Drian said all 27 of France's EU partners responded positively.
"Every country said: I am going to assist, I am going to help," Drian said.
Arriving for talks in Brussels, Greek Defense Minister Panagiotis Kammenos told reporters that the Paris attacks were a game-changer for the bloc. "This is Sept. 11 for Europe," he said.
Paris police said 16 people had been arrested in the region in relation to the deadly attacks, and police have carried out 104 raids since a state of emergency was declared Saturday.
French military spokesman Col. Gilles Jaron said airstrikes in the Islamic State group's de-facto capital in the Syrian city of Raqqa destroyed a command post and training camp. NATO allies were sharing intelligence and working closely with France, NATO chief Jens Stoltenberg said.
Minister Jean-Yves Le Drian said later that the jets have carried out new raids Tuesday evening. Speaking on TF1 TV, the French defense minister said France will have 36 fighter jets in the region capable of carrying out airstrikes on IS targets once the Charles de Gaulle aircraft carrier reaches the zone. The carrier embarks from Toulon on Thursday.
In Moscow, Putin ordered the Russian missile cruiser Moskva, currently in the Mediterranean, to start cooperating with the French military on operations in Syria. His order came as Russia's defense minister said its warplanes fired cruise missiles on militant positions in Syria's Idlib and Aleppo provinces. ISIS has positions in Aleppo province, while the Nusra militant group is in Idlib.
Moscow has vowed to hunt down those responsible for blowing up a Russian passenger plane over Egypt last month, killing 224 people, mostly Russian tourists. ISIS has claimed responsibility for the Oct. 31 attack.
Seven of the Paris attackers died Friday - six after detonating suicide belts and a seventh from police gunfire - but Iraqi intelligence officials told The Associated Press that their sources indicated 19 people had participated in the Paris attacks and five others had provided hands-on logistical support.
Mohamed Abdeslam, another brother of fugitive Salah Abdeslam, on Tuesday urged his brother to turn himself in. Mohamed, who was arrested and questioned following the attack before being released Monday, told French TV BFM that his brother was devout but showed no signs of being a radical Islamist. He said Salah prayed and attended a mosque occasionally, but also dressed in jeans and pullovers.
Two men arrested in Belgium, meanwhile, admitted driving to France to pick up Salah Abdeslam early Saturday, their lawyers said.
Mohammed Amri, 27, denies any involvement in the Paris attacks and says he went to Paris to collect his friend Salah, according to his defense lawyer Xavier Carrette. Hamza Attou, 21, says he went along to keep Amri company, his lawyer Carine Couquelet said. Both are being held on charges of terrorist murder and conspiracy.
Belgian media reported that Amri and Attou were being investigated as potential suppliers of the suicide bombs used in the attacks, since ammonium nitrate, a fertilizer that can be used to make explosives, was discovered in a search of their residence.
Their defense lawyers said they could not confirm those reports.
Salah and Brahim Abdeslam booked a hotel in the southeastern Paris suburb of Alfortville and rented a house in the northeastern suburb of Bobigny several days before the attacks, a French judicial official told The Associated Press. She spoke on condition of anonymity because she was not authorized to speak about the ongoing investigation.
Austria's Interior Ministry said Salah Abdeslam, the suspected driver of one group of gunmen carrying out attacks on Paris, entered the country about two months ago with two companions that were not identified. After the attacks, Salah Abdeslam slipped through France's fingers, with French police accidentally permitting him to cross into Belgium on Saturday.
In other developments:
- German police said five people with possible links to the Paris attacks were arrested Tuesday near the western city of Aachen.
- Another Belgian car with a shattered front passenger window was found Tuesday in northern Paris - the third vehicle police identified as having possible links to the attacks.
- Belgium was deploying 300 extra soldiers to help provide security in major cities.
Kerry flew to France as a gesture of solidarity and met Hollande and Foreign Minister Laurent Fabius on Tuesday.
A cease-fire between Syria's government and the opposition - which would allow nations supporting Syria's various factions to focus more on ISIS - could be just weeks away, Kerry said, describing it as potentially a "gigantic step" toward deeper international cooperation.
Standing next to Hollande at the Elysee Palace, Kerry said the carnage in the French capital, along with recent attacks in Egypt, Lebanon and Turkey, made it clear that more pressure must be brought to bear on Islamic State extremists.
A U.S intelligence source told CBS News that U.S. intelligence has identified Abdelhamid Abaaoud as the "mastermind" of the Paris terror plot and the key ISIS operative "for external operations in Europe and is operating in Syria."
Abaaoud has been linked to a failed terrorist plot in Belgium and an attempt to gun down passengers on a high-speed train to Paris that was foiled by three Americans.
CBS News correspondent Allen Pizzey reports that Abaaoud grew up in Molenbeek, an impoverished Brussels neighborhood where the jihadist and criminal worlds meet. It is a terrorist's dream and a security nightmare -- experts call it a "one-stop shopping" for drugs, explosives and automatic weapons.
One official cited chatter from ISIS figures that Abaaoud had recommended a concert as an ideal target for inflicting maximum casualties, as well as electronic communications between Abaaoud and one of the Paris attackers who blew himself up. The official spoke on condition of anonymity to discuss the sensitive investigation.
It was not exactly clear where Abaaoud is.
French Interior Minister Bernard Cazeneuve conceded that "the majority of those who were involved in this attack (in Paris) were unknown to our services."
In Paris, the Eiffel Tower shut down again Tuesday, after opening for just a day, and heavily armed troops patrolled the courtyard of the Louvre Museum.
In a show of solidarity, British Prime Minister David Cameron was to join Prince William at a friendly soccer match Tuesday night between England and France in London's Wembley Stadium. Armed police were patrolling the site and British fans, in a show of solidarity, were being encouraged to sing the French national anthem as well.