Victims suffered serious injuries to the head and face
TokyoReporter
Mother reported son was 'being harassed'
Apparatus caused intestinal obstruction after 20 days
Toshihiro Umetsu, 52, was found collapsed and bleeding from his head
Woman's body was found atop a futon, son's corpse near water purification plant
Suspect told customs officials, 'I carried it because I was offered a lot of money'
Hospital says woman was experiencing 'hallucinations and illusions'
Suspects used forged credit cards to withdraw ¥4.9 million from ATMs in Adachi Ward and other locations
Suspect denies charges, claims they 'both agreed to go to a hotel'
Suspect used a kitchen knife to stab his son in the chest