A YouTuber who is believed to have spread false information in Japanese about the discovery of “numerous mutilated bodies” in South Korea has become the subject of a probe, investigators said Wednesday. South Korea’s National Police Agency said the suspect, a South Korean national, has in the past uploaded videos promoting anti-Chinese sentiment and other content on YouTube, according to local media. He apparently targets a Japanese audience, with his latest claims causing debate about safety in South Korea among Japanese social media users. The agency said the YouTuber’s actions “caused publi…