World Bulletin/News Desk

French police have arrested a man suspected of involvement in the shooting deaths last weekend of three people at Brussels' Jewish Museum, officials said on Sunday.

The 29-year-old was arrested in the southern French city of Marseille on Friday and had a Kalashnikov and another gun with him, a French police source said.

The man, named by the source as Mehdi Nemmouche, was from the northern French city of Roubaix.

French media reported that he was suspected of having stayed in Syria with rebel groups in 2013.

An Israeli couple and a French woman were killed on May 24 when a man entered the Jewish Museum in busy central Brussels and opened fire with a Kalashnikov rifle. A Belgian man remains in critical condition in hospital.

French President Francois Hollande confirmed a suspect had been arrested and said France was determined to do all it could to stop radicalised youths from carrying out attacks.

Hollande has said previously the attack was motivated by anti-Semitism.

A spokeswoman for the Belgian federal prosecutor's office confirmed a suspect had been arrested in Marseille but declined to give further details.

Police released a 30-second video clip from the museum's security cameras showing a man wearing a dark cap, sunglasses and a blue jacket enter the building, take a rifle out of a bag and shoot into a room before calmly walking out.

One of the Israeli victims, Emmanuel Riva, had previously worked for Nativ, a government agency that played a covert role in Jewish migration from the former Soviet Union, an Israeli official said.

Miriam Riva, his wife, had also worked in the past for the prime minister's office, the official said.