Anne-Marie Faiola , 37 , from Washington , said her four-year-old son Jamisen had just left the room before the accident occurred last Friday . She said: 'He was in his pyjamas and he went to go into a bedroom with his mum when it happened. Authorities are currently investigating the cause of the blast .
Anne-Marie Faiola , 37 , from Washington , said her four-year-old son Jamisen had just left the room before the accident occurred last Friday . Footage caught on a baby monitor camera shows the eruption take place . Authorities are currently investigating the cause of the blast .