 There were many reports of a man with Shimoyama's height and clothing walking south along the Tōbu Isesaki Line from 6 PM until after 8 PM from Gotanno toward the spot in which the body was found.Found on the outbound track of the Jōban Line, it was determined that Shimoyama's body had been severed around 20 minutes after midnight by outbound freight train No.869, pulled by locomotive D51 651.