Three children, including a 10-month-old, were killed after fire ripped through a house in Sydney early on Sunday in an incident Australian police said they were treating as a homicide.
Emergency services were called to the property in Lalor Park, about 35 km (20 miles) west of Sydney's city center, police said in a statement.
Two boys, aged two and four, were treated at the scene but died shortly after being taken to the hospital, while a 10-month-old girl was found dead after the fire was extinguished, police said. A 28-year-old man, who frustrated police attempts to get into the property, was arrested and was being treated for fire-related injuries at the hospital under police guard, it said.