An Fengshan, spokesman for the state Council Taiwan Affairs Office, said the arrest was approved by prosecutors, which is required by China's Criminal Procedure Law.
Probes by State security authorities show that Lee had frequently come to the Chinese mainland since 2012, and colluded with certain individuals in the mainland to make plans and establish illegal organizations aiming to subvert State power, An said.
On March 19, Lee was detained by State security authorities in the mainland. He confessed what he did to harm China's State security, and judicial authorities will handle the case in line with the law, An said. Lee had been reported missing while in Guangdong province in March, causing a stir in Taiwan.
The State Council Taiwan Affairs office confirmed on March 29 that Lee had been detained on suspicion of harming national security. In April, the office also accused Taiwan of harming cross-Straits relations by playing up Lee's case.
