The shooting on May 24 – the first such attack in Brussels in three decades – raised fears across Europe of a resurgence of anti-Semitic violence and of terror attacks from foreign fighters returning from Syria.
Nemmouche had spent more than a year fighting with radical jihadists in Syria. He was arrested on May 30 in the southern city of Marseille in a bus coming from Brussels.
A revolver and Kalashnikov rifle were found in his luggage – similar weapons to those used in the shooting – as was a portable camera.
A Jewish couple was killed in the shooting, as was a French woman and Belgian man.