PARIS: France’s government urged the nation to remain vigilant Saturday, as thousands of security forces try to thwart new attacks and hunt down a suspected accomplice in a rampage by terrorists linked to Al-Qaeda in Yemen that scarred the nation and left 20 dead.

Three attackers were among those killed after three days of bloodshed at the offices of a satirical newspaper, a kosher supermarket and other sites around Paris. But the sense of relief Saturday was tinged with worry and sorrow, as the nation mourned slain hostages and cartoonists.

Security forces were deployed around the capital, guarding places of worship and tourist sites, and preparing for what’s likely to be a huge demonstration Sunday to show unity against extremists. Two dozen world leaders including Germany’s Angela Merkel and Britain’s David Cameron are among the many expected to join.

French Interior Minister Bernard Cazeneuve said authorities will do everything to ensure security at the event. Speaking after an emergency meeting called by French President Francois Hollande on Saturday morning, Cazeneuve called for “extreme vigilance,” saying that “given the context, we are exposed to risks.”

Al-Qaeda’s branch in Yemen said it directed Wednesday’s attack against the publication Charlie Hebdo for blasphemous cartoons.

In a sign of the tense atmosphere, a security perimeter was briefly imposed at Disneyland Paris on Saturday before being lifted, a spokeswoman said, without elaborating. Movement around the park was back to normal by early afternoon.

Cazeneuve said the government is maintaining its terror alert system at the highest level in the Paris region, and said investigators are focusing on determining whether the attackers were part of a larger extremist network.

Five other people are in custody as part of the investigation, and family members of the attackers are among several given preliminary charges so far.

French radio RTL released audio Saturday of the attacker who seized hostages in the kosher supermarket, Amedy Coulibaly, in which he lashes out over Western military campaigns against extremists in Syria and Mali. He describes Osama Bin Laden as an inspiration.

One of his hostages said on France 2 television Saturday that the gunman told them: “Me, I’m not scared of dying. Either I die, or I get a 40-year prison sentence.” The woman was identified only as Marie, and did not show her face.

The focus of the police hunt is on Coulibaly’s widow, Hayat Boumeddiene. Police named her as an accomplice and think she is armed.

“You must consider her as the companion of a dangerous terrorist who needs to be questioned,” Christophe Crepin, spokesman for UNSA police union, told The Associated Press. “Since 2010, she has had a relationship with an individual whose ideology translates into violence and the execution of poor people who were just doing their shopping in a supermarket.”

Tens of thousands some holding up signs that read, "Je suis Charlie" marched during a rally along the sea front in the Mediterranean city of Nice on Saturday.

A prominent Dutch cartoonist at Charlie Hebdo heaped scorn on the French satirical weekly's "new friends" since the massacre at its Paris offices, in particular far-right National Front leader Marine Le Pen.

"We have a lot of new friends, like the pope, Queen Elizabeth and (Russian President Vladimir) Putin. It really makes me laugh," Bernard Holtrop, whose pen name is Willem, told the Dutch center-left daily Volkskrant.

In the Mideast and in some quarters in France, loyalists of Al-Qaeda and the Islamic State group extolled the attackers on Charlie Hebdo as “lions of the caliphate.” They described the attack as revenge for the French satirical publication’s blasphemous cartoons and France’s military involvement in Muslim countries.

In southern Afghanistan hundreds rallied to praise the attack on Charlie Hebdo, calling the two gunmen "heroes" who meted out punishment for blasphemous cartoons, officials said Saturday.

The demonstrators also protested President Ashraf Ghani's swift condemnation of the bloody attack on the satirical newspaper, according to the officials in Uruzgan province.