article_snippet: The alarm was raised by a 32-year-old woman who rang police to say a 32-year-old woman who rang police to say her parents had been stabbed parents had been stabbed.
article_snippet: Suspect is being quizzed by detectives, but the motive was unclear and police have yet to find the weapon used in the attacks.
article_snippet: Local media said Hirano's clothes were spattered with blood and that Hirano had admitted to the multiple killing.
article_snippet: Normally, we get one call a day, if that,' Mr Okumoto said. '
article_snippet: And usually it's about a bike theft or someone getting beaten up.'
highlights_snippet: Suspect has reportedly confessed to killings after being arrested by police .
  