A teenage boy carrying a severed head walked into a Japanese police station Tuesday saying he killed his mother, the latest in a series of grisly dismemberments that have horrified a nation renowned for its low crime rate.The 17-year-old suspect led officers to his house in northern Fukushima prefecture (state) and pointed out his headless mother on her futon mattress, with a frank, "It's in here," Kyodo News reported.
While Hikikomori (hermetic individuals) have been a problem for years in Japan ( See this old guardian article), this level of remorseless pathological violence in teens is quite shocking.