Two toddlers dead after suspected stabbing
A third child, a six-month-old baby, is suffering from suspected stab wounds and in a critical condition in hospital.
All three children were found at a home in Carshalton on Friday evening after police and the London Ambulance Service were called, but the five-year-old and the four-year-old died later in hospital.
A 39-year-old man and a 35-year-old woman have been arrested and officers from the Homicide and Serious Crime Command and the Child Abuse Investigation Command have launched an investigation.