A 60-year-old Dutch diplomat has been arrested in The Hague on suspicion of passing sensitive documents to German sleeper agents connected to Russian spy Anna Chapman, a news report said.
Identified only as Raymond P., the man was detained after purportedly passing 450 files to the agents, who had operated in Germany for more than 20 years, German news magazine Focus reported.
The man has refused to cooperate with investigators.
The agents, a couple that moved to Germany in 1990 via Mexico using false Austrian passports, reportedly maintained close contact with Chapman and coordinated with the same Foreign Intelligence Service handlers.
The couple were arrested in October 2011 in Marburg, a university town in the central state of Hesse, after being accused of spying for the Foreign Intelligence Service.