A 17-year-old girl has been stabbed to death at a park in east London.
Police were called to St Neots Road in Harold Hill, Romford, at about 21:30 GMT on Friday.
The girl was pronounced dead at the scene.
The Metropolitan Police has begun a murder investigation, although no arrests have been made. The girl's next-of-kin have been informed, and a post-mortem examination is due to be held.
She is the first teenage girl to die in a homicide in the capital this year.
She became the 18th person to be killed in London this year, and the fifth teenager to die.
Last year, two 17-year-old girls and one 18-year-old woman were murdered in London.