The Setagaya Family Murder Case, 15 Years on the New Facts

One of japan's most famous investigative journalists, using the pen name thumea iji hashi, relates the book titled the setagaya family murder case, 15 years on. Ichi hashi concluded that the killer was a former south korean soldier turned killer for hire, identified by the pseudonym le innan. In response to ich hash's claims, former police chief takeshi suchida said, it's 100 % nonsense. If the book was true, the criminal would have been caught. It's ok if it was a fictional novel, but i have strong doubts calling it non fiction.