The man who housed a suspected ringleader of the Nov. 13 Paris attacks has been charged with terrorism-related offences.
Jawad Bendaoud, 29, is the first person suspected of a direct link to the attackers to be charged in connection with the attacks.
The prosecutor's office said he was charged with criminal association and detention of incendiary or explosive substances linked to a terrorist enterprise.
He is being held, but appealing for his freedom.
Police raided the apartment Nov. 18, and three people were killed — suspected attacks orchestrator Abdelhamid Abaaoud, a female cousin and one other. Bendaoud acknowledged in a television interview giving shelter to two people from Belgium in his home in Saint-Denis but said he didn't know who they were or what they planned. He told BFM television "I didn't know they were terrorists. I was asked to do a favor. I did a favor, sir."
French Interior Minister Bernard Cazeneuve told lawmakers on Tuesday that 124 people have been handed preliminary charges since a state of emergency was imposed hours after the attacks, following more than 1,230 searches in which 230 weapons were recovered. He didn't, however, specify what the charges were or if they were linked to the attacks.
In Belgium, authorities charged a fifth suspect with terror-related offenses relating to the Paris attack, which have been traced to a network of people with ties to both France and Belgium.
The Belgian federal prosecutor's office on Tuesday also issued an international warrant for Mohamed Abrini, who is being tracked by both Belgian and French police. Abrini was seen with fugitive Salah Abdeslam at a gasoline station in Ressons on the highway to Paris two days before the attacks.
On the diplomatic front, French President Francis Hollande visited Washington for talks with President Barak Obama as part of a push for the international community to bolster the campaign against Islamic State extremists.
Speaking at a joint news conference, Obama said IS, which he described as a "barbaric terrorist group," cannot be tolerated and must be destroyed.
Brussels remained at its highest alert level Tuesday, after Belgian Prime Minister Charles Michel cited a "serious and imminent threat" to the city, which houses the headquarters of the European Union and NATO. Belgium's crisis center said the alert level would only change if a significant breakthrough warranted it.
Increased security measures in the wake of the massacre in Paris have virtually shut down the Belgian capital, with the subway system, many shops and schools remaining shut. Michel said that despite the continued high alert, schools would reopen on Wednesday.
Businesses in Brussels were starting to feel the pain, and while few question the government's need to protect the public from a potential attack, some shop owners said the shutdown was too extreme.
"It's not a very good decision," said Esther Willems, assistant manager at the Galler chocolate shop in the heart of Brussels' city center. "In the last two days, we have only had about 10-11 clients" compared with about 100 normally. Willems said she hoped things would improve Wednesday.
Many questions remain unanswered as investigators try to piece together what happened in Paris on the night of Nov. 13 and who might still be at large.
Only one fugitive has been publicly named: Salah Abdeslam, who crossed into Belgium the morning after the attacks.
A street cleaner in a Paris suburb found an explosive vest Monday near the place where Abdeslam's cellphone was found, raising the possibility that he aborted his mission, either ditching a malfunctioning vest or fleeing in fear.
Authorities said the device, which did not have a detonator, was found in the southern Paris suburb of Montrouge. A police official said the vest contained bolts and the same type of explosive used in the Nov. 13 attacks.
France's security chiefs held a meeting Tuesday about protection for next year's European soccer championships, being hosted in cities around France. Concerns are especially high because one of the targets of the Nov. 13 attacks was the country's national stadium.
Interior Minister Bernard Cazeneuve also held a meeting with French Muslim leaders, who have denounced the attacks and expressed concern about a backlash on France's largely moderate, 5-million-strong Muslim community.
Also Tuesday, French police released a photo of a dog killed in the Saint-Denis apartment siege, a 7-year-old Belgian shepherd named Diesel. The National Police said Diesel, a SWAT team assault dog, was "killed by terrorists."