A woman in her 80s has been stabbed to death in southeast London.
Officers were called to reports of a man with a knife at Red Lion Place, Plumstead, at 8.50am.
Emergency crews found the woman with serious injuries and she was taken to hospital where she died.
Another man was also threatened with a knife but was not hurt, the Metropolitan Police said.
A man in his 60s attended a police station at 9.10am and was arrested on suspicion of murder.
Read more from Sky News:
Forecasters warn of 90mph winds and power cuts over Easter
More arrests over arson attack on Jewish charity ambulances
He was taken to hospital by officers, where he is receiving treatment for non-life-threatening injuries.
It is believed the suspect and the woman who died were known to each other. Officers are not looking for any further suspects.
Detective Inspector Dean Grice, who is leading the Met's investigation, said it was "a deeply tragic incident", adding "our thoughts remain firmly with the victim's family during this difficult time".
Residents will see an increased police presence in the local area, the Met said.
Detective Superintendent James Derham, who leads policing in the local area, said: "At this stage, we believe that this was an isolated incident and I want to reassure the community that there is no wider risk to the public."
(c) Sky News 2026: Woman in her 80s stabbed to death
Scott Mills releases statement after BBC sacking as he addresses police investigation
Three girls arrested after crowds of young people swarm London high street in social media 'flash mob'
Yellow warning of very strong winds issued for parts of UK over Easter weekend
Chelsea reveal largest pre-tax loss in Premier League history
Woman charged over death of great-grandmother, 87, who was assaulted at train station in Birmingham
King invited to address Congress and 'reaffirm' US-UK alliance during state visit
Can the King fix the special relationship?
Six London police officers investigated after boy, 16, forced off e-bike and left with fractured knee
Three more people arrested over arson attack on Golders Green Jewish charity ambulances
