Belgium on Monday charged two people with involvement in terrorism after they were arrested over the Paris attacks, as a major police operation in Brussels failed to nab a key suspect.

The charges came as French President Francois Hollande said that Friday's attacks in which 129 people were killed were planned in Syria but launched from Belgium, with French help.

One of the suicide bombers in the Paris attacks had links to a Belgian Islamic State militant believed to be the mastermind of a jihadist cell dismantled in January, a report said on Monday.

The name of Paris attacker Brahim Abdeslam appears in several police files alongside leading militant Abdelhamid Abaaoud relating to criminal cases in 2010 and 2011, Flemish-language newspaper De Standaard reported.

A man rammed his car into the gates of a military barracks near the Belgian city of Namur on Monday and was later arrested, but there was no indication of a terror motive, a prosecutor said.

The suspect, born in the French-speaking city of Namur in 1983, "did not figure on terror watch lists" and was "practically unknown" to law-enforcement authorities, prosecutor Vincent Macq told a news briefing.

Up to 20,000 people demonstrated in the Belgian capital Sunday in support of refugees, demanding they be welcomed and treated properly.

The organizers, a collection of local and international rights groups, said there were "20,000 people in Brussels to say welcome to refugees."

Belgium is ready to send ground troops to Syria as part of an international coalition but "we must first re-establish order," the country's defense minister, Steven Vandeput, said on Saturday.

Belgium has been a member of the U.S.-led coalition against the Islamic State (IS) group in Iraq since September last year, sending six F-16 jets and 120 personnel to join airstrikes, from a base in Jordan.

European countries will increase identity checks and baggage controls on trains after American passengers thwarted an attack on a high-speed train from Amsterdam to Paris, France's interior minister said Saturday.

Bernard Cazeneuve said the checks would be carried out "everywhere it is necessary" but did not give other details. He spoke after an emergency meeting in Paris with top security and transport officials from nine countries and the European Union in the wake of last week's attack attempt.

European ministers will gather in Paris for security talks at the weekend following last week's "targeted and premeditated" jihadist attack on a high-speed train that was foiled by passengers, it was announced Wednesday.

Prosecutors have charged 25-year-old Moroccan Ayoub El Khazzani over the attack, which saw him watch a jihadist video on his phone before entering a toilet in the train, remove his shirt, and step out armed with an assault rifle, 270 rounds of ammunition and a Luger pistol strapped to his chest.

President Francois Hollande bestowed France's highest honor on a group of Americans and a Briton on Monday saying the whole world "admires their courage and cool composure" in overpowering a Moroccan gunman on a crowded train.

Anti-terror investigators were questioning the alleged attacker, 25-year-old Ayoub El Khazzani, who boarded the high-speed train in Brussels bound for Paris on Friday armed with a Kalashnikov assault rifle, a Luger automatic pistol, ammunition and a box-cutter.

The co-chair of Turkey's main Kurdish party is to make an unscheduled trip to Brussels on Wednesday, his party said, amid reports he will meet representatives of the outlawed Kurdistan Workers' Party (PKK).

Selahattin Demirtas of the Peoples' Democratic Party (HDP) postponed his scheduled program in Ankara Wednesday, a party official told AFP, saying: "He is due to travel to Brussels."

A court handed down jail terms of up to 20 years Wednesday after a trial of 32 people charged with running one of Belgium's largest jihadist recruitment networks sending fighters to Syria, reports said.

Many of the defendants were tried in absentia, among them Abdelhamid Abaaoud, who was sentenced to 20 years, the Belga news agency said.