From left, retired army major general Hsu Nai-chuan, retired air force colonel Chou Chih-li, retired air force colonel Ke Chi-hsien and air force Lieutenant Colonel Lou Wen-ching, have all been indicted by Taipei prosecutors for violating the National Security Act by spying for China.
Photo: CNA

Taipei prosecutors yesterday indicted retired air force lieutenant colonel Liu Chi-ju (劉其儒) on suspicion of collaborating with a major espionage network on behalf of China.

Prosecutors said they had earlier indicted Chinese national Zhen Xiaojiang (鎮小江), who retired from China’s People’s Liberation Army as a captain, on charges of espionage.