A one-year-old baby girl and three-year-old boy have died after they were stabbed to death at a house in north-east London, say police.
A 40-year-old man was also found with knife injuries at the home in Ilford and his condition was unknown after he was rushed to a major trauma centre for treatment.
Detectives believe the man and the children knew each other. Officers are "not looking for anyone else" following the suspected double murder.
The children and the man were found injured when police, paramedics and an air ambulance were called at about 5.30pm on Sunday.