The boy’s aunt and sister said he never cried or showed remorse. They also said he logged into his mother’s Amazon account and ordered an Oculus Virtual Reality Headset the morning after she died. That same morning, he physically attacked his 7-year-old cousin.

Relatives said the boy has a history of disturbing behavior. When he was 4, he swung the family’s puppy around by its tail, the complaint says. Six months ago, family told police, the boy filled a balloon with a flammable liquid and set it on fire, causing an explosion that burned furniture and the carpet. Relatives recalled that when asked about that, the boy said he hears five imaginary people talking to him.