Man, 25, arrested after deaths of pregnant woman and baby in Croydon

Kelly Mary Fauvrelle killed in attack while her son, delivered by caesarean, died four days later

Police investigating the murders of a woman and her unborn child in south London have arrested a man, Scotland Yard has said.

The 25-year-old man, whom officers have not named, was taken to a central London police station after being arrested on suspicion of murder on Thursday.