A Frenchman suspected in the shooting deaths of four people at the Jewish Museum in Brussels was remanded in custody for a month Monday on charges of "murder in a terrorist context."

Mehdi Nemmouche, 29, who spent more than a year fighting with Islamic extremists in Syria, was extradited from France to Belgium last week for questioning over the May 24 shooting.

A Frenchman suspected of carrying out a fatal shooting at the Jewish Museum in Brussels was charged Wednesday with "murder in a terrorist context", the Belgian prosecutor's office said.

Mehdi Nemmouche, 29, who spent more than a year fighting with Islamist extremists in Syria, was extradited from France to Belgium the previous day to be questioned over the May 24 shooting which left four people dead.

Britain's new Foreign Secretary Philip Hammond confirmed Sunday he would vote to leave the EU unless London can repatriate powers from Brussels.

Hammond said without changes to Britain's relationship with the European Union, he expected the country would vote to leave the bloc in a referendum, which Prime Minister David Cameron has promised to hold in 2017 if his Conservatives are reelected next year.

A French court on Thursday ordered the extradition to Belgium of a man suspected of carrying out a deadly shooting at the Jewish Museum in Brussels on May 24 that killed four people.

The court in Versailles, west of Paris, said Franco-Algerian Mehdi Nemmouche, 29, who was detained several days after the attack, should be handed over to Belgian authorities for "killings with a terrorist connotation."

A Belgian court on Friday ordered that 46 suspected members of a radical Islamist group, believed to be involved in sending young fighters to Syria, stand trial later this year.

Sixteen people alleged to be part of Sharia4Belgium, including its head Fouad Belkacem, face charges of leading a terrorist organization, the federal justice office said.

Mehdi Nemmouche, the French Islamist arrested on suspicion of a triple murder at the Brussels Jewish Museum, is to contest being handed over by France to Belgium, his lawyer said Wednesday.

Nemmouche, 29, was arrested in Marseille on Friday. He wants to stand trial in France and will fight a European arrest warrant issued by the Belgian authorities, the lawyer, Apolin Pepiezep told Agence France Presse.

French police arrested four people suspected of links with jihadist networks Monday, three days after detaining a man for last week's deadly attack on a Jewish museum in Brussels.

Interior Minister Bernard Cazeneuve announced the sweep on Europe1 radio but did not specify if the arrests in the Paris region and southern France were linked to the Brussels shooting suspect Mehdi Nemmouche.

A Frenchman who spent over a year in Syria has claimed responsibility for last week's deadly shooting at a Jewish Museum in Brussels in a video recording, prosecutors said Sunday.

Mehdi Nemmouche, 29, who was arrested by customs agents on Friday on arrival in the southern French city of Marseille, is believed to have recorded the claim in a 40-second video found in his possession along with a Kalashnikov and a handgun.

Fresh from victory in European elections in France, far-right leader Marine Le Pen said Wednesday she was confident of creating a new euroskeptic group within weeks inside the European Parliament.

After driving her National Front (NF) to first place with 25 percent of the vote in France, Le Pen hopes to form and take command of a far-right grouping of parties in the Parliament, a move that would boost both her influence and financial clout.

The killing of two Israelis by an unknown gunman in Brussels may have been a planned assassination rather than a random act, Israel's Haaretz daily said on Tuesday.

The attack, in which a gunman opened fire at the Jewish museum in the Belgian capital on Saturday, killed three people, including an Israeli couple in their 50s who reportedly had ties to an Israeli government agency.