Police say two more children have died after a suspicious house fire in Toowoomba, west of Brisbane.
Emergency services were called to Merritt Street in Harristown about 12.30am on Wednesday, where they found the house engulfed in flames.
A body believed to be of a nine-year-old boy was discovered in the house.
Overnight, a four-year-old girl and seven-year-old girl died at Queensland Children's Hospital from their injuries.
A 36-year-old woman remains in a critical condition at the Royal Brisbane and Women's Hospital under police guard.
A 34-year-old man and an 18-year-old man were released from Toowoomba Hospital on Thursday morning.
Police said they are treating the fire as suspicious, and are not looking for anyone else in connection to it at this time.
ABC
