Iranian state TV reported on Thursday the country’s Foreign Ministry has summoned envoys from France, Germany and Belgium over the case of an Iranian diplomat detained in Germany.

The report says Deputy Foreign Minister Abbass Araghchi held separate meetings with the three diplomats in Tehran to express Iran’s “strong protest” over the detention of Tehran’s Vienna-based envoy, Assadollah Assadi.

Assadi was detained Sunday near the German city of Aschaffenburg on a European arrest warrant for suspected involvement in a plot to bomb a large Iranian opposition rally north of Paris on June 30.

His arrest came after a couple with Iranian roots was stopped in Belgium and authorities reported finding powerful explosives in their car.

Following the arrest of the Iranian diplomat, Iran’s ambassador was summoned to the Austrian Foreign Ministry on Monday.

Araghchi called allegations against Assadi a “plot aimed at damaging EU-Iran relations” ahead of a nuclear meeting tomorrow.

Iran summons 3 European envoys over its detained diplomat