South Korea's army has been hunting down and prosecuting gay soldiers, according to a watchdog group, following the online leak of a video in which two men in the armed services were shown having sex. The head of the Military Human Rights Center for Korea, Taehoon Lim, said military investigators have since threatened soldiers in an effort to get them to out their gay peers, in addition to confiscating cellphones and using dating apps to trick others. The army has said publicly that it is conducting a thorough criminal investigation into the video that was posted, including into anyone who filmed or uploaded the file. Homosexuality is punishable by up to two years in prison, according to the military penal code in South Korea. "Military investigators used the information they gained from the investigation on the sex video to track down other gay soldiers in the army, starting by forcing the suspects to identify who they had sex with and then widening their search from there," said Lim.