On Tuesday, the German authorities handed over the suspect to Belgium. Two of the diplomat's alleged accomplices were earlier arrested in Belgium and another detained in France and transferred to the Belgian prosecution.
The Belgian authorities, in turn, have charged an Iranian diplomat with plotting a terrorist attack, the Belgian federal prosecution said on Wednesday in a statement obtained by Sputnik.
"All four are now under arrest. They have been charged with attempting a murder of a terrorist nature and plotting a terrorist act," the prosecution said.
Tehran has protested the diplomat's detention and expressed its readiness to cooperate with all parties involved to discover the truth behind "a sinister false flag ploy."
READ MORE: Tehran Lodges Protest With France, Germany Over Detention of Iranian Diplomat