Victim was stabbed in the back on a road in Chiba City on Saturday
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News from Chiba
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'
Suspect told the male owner, 'Give me money or call the police'
Suspect is accused of stealing 11 million yen from one post office in Mobara City last year
Suspect allegedly started fire that destroyed eight buildings, including his own home, in Kashiwa City
One post read, 'I always cover up incidents because it's a hassle to write about them'
Suspect also said that he would kill himself by setting his house ablaze
Security camera footage shot at the time of incident shows the car plunging into the sea