A 20-month-old toddler died after suffering a number of blows or kicks to the body when in her bedroom, a NSW court has heard.
The toddler, who cannot be named, went into cardiac arrest and could not be revived by paramedics.
Crown prosecutor Lee Carr SC told a Newcastle Supreme Court jury on Monday the toddler died from her injuries, including bleeding to the brain, broken ribs, a collapsed lung, lacerations to her liver and bleeding in her abdominal cavity.
Timothy Andrew Whiteley, 28, has pleaded not guilty to murdering the toddler at a house in the Hunter region on June 19, 2018.
Whiteley had been in a relationship with the girl's mother.
Mr Carr said an ambulance was called to the house and paramedics found the toddler unconscious, cold to the touch with no heartbeat.
Attempts were made to revive the toddler but she was pronounced dead at John Hunter Hospital at 6.03pm.
An autopsy revealed the toddler had died as a result of her multiple injuries caused by one or more significant blows or being kicked.
Mr Carr told the jury Whiteley and the girl's mother were the only adults inside the house with the toddler when there was a "thud-type bang" just before 12.20pm.
The toddler had been put down earlier to go to sleep.
Whiteley's mother and a family friend arrived at the house shortly after the bang was heard by one of Whiteley's workmates who had been visiting and was sitting on the back verandah.
Mr Carr said the toddler was carried from the bedroom area soon after in a clearly distressed state, unconscious and not responding.
The prosecutor said CCTV footage showed the mother leave the house at 3.10pm to go pick up another daughter.
He described the toddler as looking "floppy" when carried to the car by her mother before she drove off.
They returned at 3.32pm with the CCTV footage showing the toddler being brought back into the house.
Mr Carr said an ambulance was called at 5.14pm and paramedics could not save her.
The trial before Justice Stephen Rothman continues.
