German authorities have arrested a Sudanese man on suspicion of spying on dissidents living abroad.
The 39-year-old is alleged to have given the Sudanese government information about opposition activists and dissidents living in Germany.
The man, whose name has not been given, was arrested on Saturday in Berlin, prosecutors told the AP news agency.
Under German law, anyone found guilty of espionage faces a jail term of up to five - and occasionally 10 - years.
German prosecutors say the suspect had been spying on the activities of Sudanese government opponents abroad since 2005.
The suspect's response to the allegations against him are not known.