Suspect told police, 'I did it for my sexual desire'
TokyoReporter
Mother is believed to have died more than 10 days before the discovery, police said
Suspect said, 'I became frustrated when there was a child who was unteachable'
Suspect allegedly struck the victim with a cylindrical object, police said
Magazine JR East included an interview with an economist who does not exist in its June issue
All of the occupants of the residence were sent to a hospital due to smoke inhalation, police said
Suspect denies the allegations, telling police, 'A person I am not acquainted with instructed me'
Suspect has declined to comment on the allegations, police said
Mayor said, 'I would like to offer a profound apology'
Body was clothed in a blue short-sleeve t-shirt and black sweat pants, police said