A woman has been arrested on suspicion of murder after a four-year-old boy was stabbed to death.
The Metropolitan Police have launched a murder investigation after the death of the child in Hackney, east London.
Officers and the London Ambulance Service were called at around 10.50pm on Wednesday and found the four-year-old boy with knife injuries.
He was taken to hospital for treatment but died from his injuries.
Police detained the woman, 41, at the scene and she remains in custody.
The force said she was known to the boy and they are not looking for anyone else in connection with the death.
Detective Chief Superintendent James Conway said: “This is an extremely distressing incident which will understandably cause shock and disbelief amongst the local community and those who attended the scene.
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“We are working with our partners, including Hackney Council and the school community, to ensure support is there for people who need it.
“Specialist officers from our homicide team are progressing this investigation and continue to work to establish the circumstances of this young child’s death, and the events that led up to it.
“This incident occurred within the home and, while there is no wider public safety risk, additional officers will be present in the area as we recognise the impact this will have on the community.”