The daughter of a master at one of the UK's leading public schools has been found stabbed to death and the son of another teacher has been arrested.
The property was cordoned off
Lucy Braham, 25, the daughter of Harrow School's art director, was found at her family home in Harrow-on-the-Hill, north-west London, on Thursday night.
She had wounds to her chest and abdomen and was pronounced dead at the scene.
Police have arrested student William Jaggs, 22. He was found with stab wounds, thought to be self-inflicted.
A knife was found at the scene, in Peterborough Road.
It is thought the pair knew each other but were not in a relationship.
The arrested man, who is critically injured and too ill to talk to detectives, is under police guard in hospital. He is believed to be the son of a design teacher at the school and a student at Oxford University.
Police have cordoned off the property, a Victorian house which is part of a large residential block.
It is located just 200m from the entrance to the private all-boys school, which caters for 800 pupils.
A spokeswoman for Harrow School said: "There was a serious incident in a property owned by the school last night. No pupils from the school were involved.
"Residents of the Harrow community are deeply shocked by this tragedy and the school wishes to extend its greatest sympathy to the families of those involved."
Former Harrow School pupil Deep Dansingani, who now runs an antique shop on Harrow on the Hill, said everyone was devastated.
"I have lived in Harrow all my life practically and it's a great sadness for the whole community," he told BBC London.
Ray Pan, manager of Bistro Francais, opposite the school, said it was a nice quiet area with a low crime rate.
"I'm just stunned that something like this could happen here," he said.