Investigation revealed that at the instigation of the NK News and other anti-DPRK media he handed over several times the data and photos he collected and analyzed while combing Pyongyang by making use of the identity card of a foreign student.

He honestly admitted his spying acts of systematically collecting and offering data about the domestic situation of the DPRK and repeatedly asked for pardon, apologizing for encroachment upon the sovereignty of the DPRK.

The DPRK government expelled him from the territory of the DPRK on July 4 by showing humanitarian leniency to him.