The boy was reportedly found unresponsive outside the family home in Gardendale, Texas on 21 January.

BBC: Max Shatto Russia-US adoption death ruled an accident

Max Shatto and his younger brother Kristopher were adopted from an orphanage in north-west Russia last year by Alan and Laura Shatto, who live in Gardendale, Texas.

BBC: Russia investigates 'murder' of Max Shatto, US adoptee

Max Shatto, born Maksim Kuzmin, and his younger brother Kristopher were adopted from an orphanage in north-west Russia last year by the Shattos, who live in Gardendale, Texas.

BBC: Max Shatto: Texas prosecutor declines charges in death