stabbing
Two people have been stabbed and one person has been arrested at the Sony Music building on Derry Street, Kensington in London.
A cordon remains in place.
Another man was injured in a separate shooting.
20-year-old to be questioned further once discharged from hospital.
An 18-year-old man was also hurt.
Three arrested on suspicion of murder released under investigation.
The 74th murder investigation in the capital this year has been launched.
A 48-year-old woman has been arrested.
An injured 48-year-old woman was also found at the same address.
Police have not identified the victim.