Suspect held the toy knife up to a female employee
TokyoReporter
A man, 50, and his wife, 49, live in the residence, police said
Police do not have any information that links the cases together
Suspect said, ‘I know nothing’
Yasushi Moritani was struck by an Asakusa Line train in Shinagawa Ward on Monday
Boy stabbed the employee while his back was turned momentarily
Victim was found collapsed with blood pouring from his head on Sunday
Body of victim was found on the second floor of his residence in April
Suspect allegedly laced a drink consumed by the second boy with a sleeping powder
Gender and approximate age are not known