A three-year-old boy has died of his injuries following a house fire which also killed two teenagers.
The child was being treated at Frenchay Hospital in Bristol following Friday's blaze in the Honiton area of Devon, but was pronounced dead on Saturday afternoon.
Devon and Cornwall Police had earlier confirmed the deaths of a 17-year-old girl and an 18-year-old man.
A spokesman said: "It is with great sadness that police can now report that the three-year-old boy, who was taken to the specialist burns unit at Frenchay Hospital, has been pronounced deceased.
"Our thoughts are with the family at this time and the investigation to establish the cause of the fire is ongoing."
Officers were alerted to the fire in Lee Close shortly before 8am on Friday and a total of five people were taken to the Royal Devon and Exeter Hospital, with the three-year-old later transferred to hospital in Bristol.
A six-year-old boy and a man in his 30s were also treated for smoke inhalation.
Seven members of one family and another person were in the property when the blaze began.