rtokens: The ministry spokesman said the German embassy immediately made a sharp protest to the Tehran government .
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tokens: Gust was threatened with violence , then locked into a room to be interrogated on suspicion of " promoting activities hostile to the state " while his guests were taken away , the magazine said .
ltokens: A spokesman said he could substantially confirm a report in the news weekly Der Spiegel , which said Iranian secret police burst in while attache Jens Gust was entertaining six Iranian writers and their wives .