A retired military official surnamed Wang is being questioned on suspicion of espionage.
Prosecutors have also questioned four others in connection with the case. The prosecutors received a report that Wang had visited China in 2013 and was hired by China to gather intelligence. Wang began to organize his spying operation after returning to Taiwan
A judicial investigation into the case has already begun. The defense minsitry says that case details cannot be revealed or commented on at this time.