Body was found between an abutment and a girder of the Omoiyari Bridge
Suspect telephoned police on Monday, 'My mother is dead inside my car'
Suspect denies the allegations, telling police, 'I only took back my money'
Woman suffered a broken left arm, police said
Club says, 'See what it's like to celebrate summer, Japanese festival-style'
Woman suffered a wound to the abdomen that will require two weeks to heal, police said
Incident emerged after she wrote about it in a notebook at school: 'My father got violent with me'