A 15-year-old boy was arrested Wednesday in western Japan for allegedly striking a woman in the head with a hammer the previous day, causing serious injuries including a skull fracture, police said.The junior high school student, whose name is being withheld because he is a minor, told the police, "I hit her as she just happened to be there. I have wanted to kill a person for some time."The boy, who was arrested on a charge of attempted murder, is suspected of striking Sumiko Nishiguchi, 70, on the head with a hammer several times on a street in Matsubara, Osaka Prefecture, at around 9:30 a…READ FULL ARTICLE