A little more than a year ago, Rie Miyoshi, 33, was stabbed to death in her apartment in Zushi, Kanagawa Prefecture, by a man who was known to have been stalking her after they broke up years earlier.
Hideto Kozutsumi tracked Miyoshi down based on information, including her married name, read aloud to him by a police officer who had arrested him 17 months earlier on suspicion of threatening her. She had asked the police not to divulge her personal information to him.
After killing Miyoshi, Kozutsumi, 40, killed himself in the apartment.