A man has been arrested on suspicion of murder after an alleged domestic incident which left a woman dead and put a 14-year-old boy in hospital.
Thames Valley Police said the 32-year-old suspect was arrested at the scene on Wood White Drive in Aylesbury, Buckinghamshire, at around 3.45pm on Saturday.
A 54-year-old woman was found at the address with serious stab wounds.
She was pronounced dead at the scene.
A 14-year-old boy was also injured as a result of the incident.
He sustained non life-threatening injuries and was taken to hospital where he remains, police said.
A police spokesman said he was unable to confirm whether the victims knew each other, but said it was being treated as a "domestic incident".
Next of kin have now been informed and are being supported by specially trained officers, police said.
Detective Superintendent Ian Hunter said: "I understand that this incident will cause concern in the community, but I would like to reassure people that we believe it to be an isolated incident.
"We have launched a full investigation and have made an arrest.
"We currently have a number of police officers at the scene carrying out inquiries, and I would encourage anyone with any questions to feel free to approach them.
"I would appeal to any witnesses or anyone with information about this incident, no matter how insignificant you think it could be.