This is the first picture of a four-year-old girl found lifeless alongside her critically-injured mother in their family home.
After being flown to hospital, the toddler, named locally as Sajaky, was pronounced dead, while a 35-year-old woman - believed to be her mother, and identified as Sutha Karunanantham - remains in a life-threatening condition.
Their neighbour, Elsa Gonzales, 47, described hearing screaming and crying coming from the flat next door, where the family-of-four from Sri Lanka lived.
Mrs Gonzales, who used to work in an emergency department, said: "I saw the woman lying on the floor in a pool of blood. There was blood everywhere. I looked on the bed and saw the girl, she was covered in a blanket."
Officers and paramedics arrived at the scene at around 4pm.
The girl was taken to hospital where she was pronounced dead shortly afterwards, while the woman's injuries are described as life-threatening.
Police said no arrests have been made and they are not looking for anyone else in connection with the incident.
Mrs Gonzales, who has lived at Monarch Parade for 12 years, said: "It's really breaking my heart, the child was a smart kid, she was always smiling. She was a cheeky little girl, always playing with the neighbourhood kids.
"To see her so lifeless, it's like my heart is bleeding. She (the woman) was a good mum."
Local shopkeeper Pathmanathan Ariyaratnam added: “They are my customers.It is a mystery what can have happened.”
Neighbour Thebaka Thurairadneswaran added: “The little girl used to come and play here, we are so upset. She was so beautiful and full of life. They are the nicest family, we are really devastated.”
Police said a woman, 35, had been taken to hospital with life-threatening injuries. No arrests have been made. A post-mortem examination will take place in due course.