A woman in her 30s has been stabbed to death in south London, the Metropolitan Police said.
Officers were called to a residential address in Sudbourne Road, Brixton, at around 6.36pm on Sunday.
Paramedics attended, but the woman was pronounced dead at the scene.
A man in his 20s has been arrested on suspicion of murder and is in custody at a south London police station.
Her death comes amid fears of growing violent crime in the capital, where there have been more than 50 murders since the beginning of the year.