(JTA) — A Canadian university professor was charged in a deadly 1980 synagogue bombing in Paris.

Hassan Diab was charged in Paris on Saturday in the bombing of the Rue Copernic synagogue that killed four and injured more than 40.

The arraignment came hours after Diab arrived in Paris after being extradited from Canada following a six-year fight to prevent it.

Canada’s Supreme Court last week declined to hear Diab’s appeal. The court did not give reasons for its refusal to hear the case, seeking to appeal lower court rulings that called for his extradition.

French authorities allege that Diab was a member of the Popular Front for the Liberation of Palestine and took part in the deadly bombing of the Rue Copernic synagogue.

Diab, 60, a dual Lebanese and Canadian citizen, has repeatedly denied the allegations.