French police have issued a photograph of a man wanted in connection with Friday's deadly attacks in Paris.
The man, named as Belgian-born Abdeslam Salah, 26, is described as dangerous.
Seven attackers, including two who lived in Belgium, died during assaults on a series of targets, officials said.
French Interior Minister Bernard Cazeneuve said the attacks had been prepared "by a group of individuals based in Belgium" who had "benefited from accomplices in France."
The attackers targeted restaurants, a concert hall and the State de France, country's main sports stadium outside Paris.
On Sunday three more of about 350 people wounded in the attack died, bringing the death toll to 132, AFP news agency says.
The Islamic State (IS) militant group has said it was behind the attacks, which are the biggest loss of life in France in peacetime.
France has said it will continue with its airstrikes against IS in Syria and Iraq.
Seven attackers, including two who lived in Belgium, died during the assaults.
On Sunday, the discovery of a suspected getaway car in Montreuil, east of Paris, fuelled suspicion that at least one suspect had escaped.
French police appealed for information about Abdelslam Salah but warned people not to approach him.
Rented in Belgium
The Seat car found in Montreuil is believed to have been used by gunmen who opened fire on people in restaurants on Friday, police say.
Several AK47 rifles were found in the car, French media quote judicial sources as saying.
France is marking three days of national mourning. On Sunday, a memorial service was held at Notre Dame Cathedral.
Meanwhile panic broke out at the Place de la Republique, where hundreds of people had gathered to honour the victims.
Crowds ran over flowers and candles. Police - who cleared the square - later said people may have mistaken the sound of firecrackers for gunfire.
Suddenly our waiter urged us to get up and get in the back of the café. We were thinking Paris was getting back to normal, sitting in a packed in the Marais area, about to pay the bill. We were wrong.
A young woman came in, clearly shaken, trying to catch her breath. She said somebody had told her there was a man with a gun on the streets.
She'd been told to get inside. Something was happening in the nearby Place de La Republique. No, she hadn't seen a gun. No, she hadn't heard any shots. But, yes, she was petrified.
The metal shutters, came down, the lights were switched off. We were told to get down on the floor. No, lower: lie down. Keep quiet. Whisper.
It lasted about half an hour, this twilight of frightened disbelief. People called the emergency number and the all clear came through. The waitress told me it reminded her of stories about the war.
The Seat and another car used by the attackers - a VW Polo - were rented in Belgium.
The Polo was found near the Bataclan concert venue, where 89 people were killed.
One of the Paris attackers lived in Brussels and another in the nearby town of Molenbeek, Belgian prosecutors said on Sunday, without naming either.
A total of seven men have been arrested in Molenbeek, they added. Not all are being held in direction connection with the Paris attacks.
The only dead attacker to be named so far is a 29-year-old Frenchman, Ismail Mostefai. He had a criminal record and had been flagged up as a possible Islamist extremist.