Authorities have determined that a 19-year-old Kobe youth who made headlines in 1997 for chopping the head off an 11-year-old boy and placing it atop a school gate needs to have his detention extended, sources said Wednesday.

The 19-year-old, who also killed another child and wounded three others, is currently being held at a juvenile correctional facility.

Correctional officers will soon submit a request for an extension to the Kobe Family Court, which will hold hearings with the teen and juvenile training school officials to determine whether the request should be granted, the sources said.

The youth was arrested in May 1997 on suspicion of murdering an 11-year-old boy earlier that month and placing the victim's head on top of a school gate, as well as assaulting four elementary school girls with a hammer in February and March the same year. One of the girls died of her wounds.