From AFP via ynetnews.com:
A man suspected of
killing four people at the Jewish Museum in Brussels on May 24 was
arrested Friday in Marseille, carrying a Kalashnikov and a pistol of the
type used in Belgian capital AFP learned on Sunday from sources close
to the investigation and judicial source.
A source close to the investigation says that Mehdi Nemmouche, a
29-year-old from Roubaix in northern France, is suspected of having
been in the company of jihadists in Syria in 2013. He is in custody on
suspicion of murder and attempted murder in connection with a terrorist
attack, a judicial source said.