In 2021, Belgium convicted Assadi of masterminding a thwarted bomb attack against an exiled Iranian opposition group in France and sentenced him to 20 years in prison. Prosecutors tied Assadi to a couple, stopped by the Belgian police and found with 550 grams (1.21 pounds) of TATP explosives and a detonator in 2018. They had been trying to target a meeting in Villepinte, France, of the Mujahedeen-e-Khalq, an exiled Iranian opposition group known as the MEK.