Mehdi Nemmouche, a French jihadi who returned to Europe after fighting in Syria, was convicted of murdering four people at a Jewish museum in Brussels in 2014.
The guilty finding after a two-month jury trial closes a notorious case that heralded the start of a bloody period of terrorist violence in Europe perpetrated by militants returning from Syria’s battlefields.
Mr Nemmouche, 33, will be sentenced by the Belgian court at a later date and faces up to 30 years in prison for the shootings, which left two Israelis and two museum staff dead.
During his trial Mr Nemmouche, who was arrested alighting from a bus in Marseille, admitted to carrying a Kalashnikov assault rifle and a handgun similar to the ones used in the May 24 attack.
But the Frenchman told the court he was innocent of terrorism, insisting he had been “tricked”. Defence lawyers claimed the Frenchman had been framed, according to local media reports.
Moshe Kantor, President of the European Jewish Congress, condemned the defence team’s use of “reprehensible tactics” and “conspiracy theories” during the trial.
The Frenchman was suspected of being a member of the Islamic State militant group and an associate of Najim Laachraoui, a suicide bomber in the Brussels airport attack of March 2016.
Four French journalists who were held hostage in Aleppo testified that Mr Nemmouche was one of their prison guards and torturers.