Two 17-year-old boys have died after being stabbed in Milton Keynes.
Emergency services were called to a property in Archford Croft, in the Emerson Valley area, just before midnight, Thames Valley Police said.
One of the victims died at the scene, while the other died after being taken to hospital.
Two men were hurt in the incident and have been taken to hospital with serious, but not life-threatening, injuries. No arrests have been made.
Officers remain at the scene, which is on a cul-de-sac in a housing estate.
“Thames Valley Police is in the early stages of a double murder investigation after two teenage boys have tragically died in this shocking incident,” said Det Ch Supt Ian Hunter.
“I would like to speak to anyone who has any information which could help with our inquiries or anyone who witnessed any suspicious activity.
“Even if you think details may be insignificant, please come forward and speak to police.”