A German-Russian dual citizen has been arrested in Germany on allegations of violating the country’s foreign trade act multiple times by exporting electronic components to a company in Russia involved in the production of military materiel and accessories, Germany’s federal prosecutor’s office said Tuesday.

The suspect, who was only identified as Waldemar W. in line with Germany privacy rules, was arrested in March. However, on Monday, the arrest warrant issued by a local court in the city of Mannheim at the time was replaced by an arrest warrant issued by an investigating judge of the country’s Federal Supreme Court.

The federal prosecutor’s office said that W. was managing director of two companies he founded in the western German state of Saarland for international trade in electronic components.