A US citizen has been arrested in Frankfurt on suspicion of espionage for China, the German Federal Prosecutor’s Office announced on Thursday. The man allegedly offered sensitive information from the US military to a Chinese intelligence service, the authority based in the south-western city of Karlsruhe said. The suspect is accused of having declared his willingness to engage in intelligence activities for a foreign intelligence service. He reportedly worked for the US armed forces in Germany until recently. Earlier this year, it is claimed that he contacted Chinese state entities and offered…