The decomposing and naked body of a 6-year-old boy was found Monday inside a plastic bag floating in a canal in Amagasaki, Hyogo Prefecture, six days after he was reported missing, police said.

Reporters gather in front of the Amagasaki, Hyogo Prefecture, home of Kyoichi Seta, 6.

The parents, who had reportedly not been seen since Aug. 8, were located by authorities near their home Tuesday and questioned by police in connection with their son's death.

The victim was identified as Kyoichi Seta, a student in the first grade at Kobe's Tachibana Elementary School. Police said the boy, who had been living at a children's institution in Kobe since March after reports of parental abuse, had several scars on his body believed to have been inflicted before his death.

Hyogo Prefectural Police searched several locations in connection with the case Tuesday on suspicion of murder and disposing of a corpse, while an autopsy was performed later in the day to pinpoint the cause of death, investigators said.