Suspect told police upon his surrender, 'I killed my sister'
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News from Chiba
Stabbed the victim in the chest with a knife in Noda City early Sunday, police said
Suspect said, 'I wanted to experience the thrill'
Suspect said, 'I lost my temper and sprayed the pepper spray'
Perpetrators are shown shoving a crowbar into a change machine
Victim received a stab wound to the stomach, police said
Victim was stabbed in the back on a road in Chiba City on Saturday
Suspect said, 'I strangled them with an electrical cord'
Infant had been dead for several days, police said
Suspect said, 'I was unable to control my sexual desire'