A 26 year-old woman has been stabbed to death at a home in Raymead Avenue, Thornton Heath, Croydon, London Metropolitan Police reported.
The police also said that her baby was delivered at the scene and now is in critical condition in a hospital.
The police arrested a 37-year-old man on suspicion of murder and placed him in custody.
Concerns have been on the rise over the past few years about a marked surge in knife crime rates across the UK, specifically in major cities, such as London. The epidemic, which is a burning, hot-button topic in UK politics, has prompted many to call for the government to boost stop and search powers of city police.