James Taylor's body was discovered at the house in New Ash Green
An 11-year-old boy who was found dead at his home in Kent died of drowning, police have revealed.
Grammar school pupil James Taylor died at Knights Croft, New Ash Green, near Dartford, on 2 December.
Kent Police said a post-mortem examination also revealed that traces of drugs were found in his body.
His mother, Jennifer Taylor, 44, is in custody charged with his murder. She will face trial at Maidstone Crown Court in June.
James was a pupil at Wilmington Grammar School for Boys in Common Lane, Wilmington, near Dartford, after transferring from Steephill School, a private primary in the nearby village of Fawkham.