The Metropolitan Police said officers were called to Leyborne Avenue just before 1pm
O polícia Metropolitana said officers were called to Leyborne Avenue just before 1pm on Tuesday after concerns were raised for the little girl’s welfare.
Officers and an ambulance crew tried to save her but she was pronounced dead at the scene.
Her family has been told.
A 31-year-old woman. was arrested on suspicion of murder and taken into custody.
She is known to the deceased.
Homicide detectives from the Met’s Specialist Crime Command are leading the investigation.