Prosecutors have indicted a man for allegedly killing a junior high school boy in Osaka Prefecture in August, about two months after he was indicted for murdering a girl who was friends with the boy.

According to the prosecutors, Koji Yamada, 45, has remained silent over the deaths of 12-year-old Ryoto Hoshino and 13-year-old Natsumi Hirata, who attended the same junior high school in Neyagawa, Osaka Prefecture.

The indictment, filed Tuesday. effectively marks the end of the investigation as Yamada is unlikely to face further charges for dumping the bodies of the two children as prosecutors have been unable to specify when and where they were killed, according to sources close to the matter.