A 17-year-old boy arrested on suspicion of stabbing two girls in Saitama and Chiba prefectures will undergo a psychiatric examination after telling police he wanted to kill a person because killing animals wasn't satisfying, according to prosecutors.
The Saitama District Public Prosecutor's Office wants to determine the boy's state of mind at the time of the stabbings and whether he is mentally competent. The tests will be conducted through May 7, the prosecutors said.
The boy was arrested Dec. 5 and sent to prosecutors following the stabbing of a 15-year-old girl in Misato, Saitama Prefecture, on Nov. 18 and an 8-year-old girl in Matsudo, Chiba Prefecture, on Dec. 1.
Local police have also served fresh warrants on the boy on suspicion of setting a motorcycle on fire in a parking lot in Misato in October and killing two cats at his home, in 2010 and 2011. His name has been withheld because he is a minor.