Transfer of Salah Abdeslam from Belgium to France was carried out without advance notice and in secrecy and came as a 'surprise' to his lawyer.
Najim Laachraoui, one of Brussels airport suicide bombers, was identified by French journalists kidnapped and held in Syria from 2013 to 2014.
The Belgian national of Moroccan origin arrested Friday is linked by DNA to Paris attacks while suspected of taking part in Brussels airport bombing.
Linking of notorious district of Brussels to France is welcomed by political right but others dispute link between poverty and radicalisation.
But after latest arrests linked to Paris and Brussles bomb attacks, French president says 'there are other networks' posing a 'heavy threat'.
Brothers Ibrahim and Khalid El Bakraoui and Najim Laachraoui, who all died in Tuesday's blasts, were linked to November attack in France.
The attacks in Brussels on Tuesday March 22nd highlight once again how Belgium has become a nerve centre of jihadist terrorism in Europe, as well as being a target itself. The Belgian network led by Abdelhamid Abaaoud, who led the November 13th bombings in Paris, was very active while the logistical 'expert' for the Paris attacks, Salah Abdeslam, who was arrested just last week, is suspected of having been involved in planning the latest attacks in the Belgian capital. Earlier this year, meanwhile, Europol warned of the risk of more attacks. As Belgian authorities identified three men with links to the Paris attacks as the Brussels suicide bombers, Matthieu Suc and Yann Philippin consider how Belgium has become a terrorist hub.
After emergency cabinet meeting in Paris the French president said: 'France will implacably continue the fight against terrorism.'
Belgian foreign minister says arrested fugitive wanted for November's Paris terrorist attacks was found in Brussels with 'a lot of weapons'.
The Paris terror attacks fugitive, arrested in Brussels, has refused to be extradited to France but is 'cooperating' with Belgian police, says his lawyer.
Belgian PM Charles Michel has confirmed three suspects were arrested in Friday's raids in Brussels, including Paris attacks fugitive Salah Abdeslam.
French national Salah Abdeslam, 26, wanted for his part in the November attacks that left 130 dead, was wounded during his arrest in Molenbeek area of Brussels.
Belgian prosecutors said fingerprints of Salah Abdeslam, who took part in the November 13th attacks in Paris, were found in a flat raided earlier this week.
Algerian Mohamed Belkaid, 35, was shot dead in a gun battle in Brussels with Belgian and French police, while two other men escaped.
Three officers were reportedly wounded in shoot-out during raid to arrest November 13th Paris attacks suspects, while at least two men fled the scene.