The newborn son of a pregnant woman who was murdered in south London has died.
Kelly Mary Fauvrelle was eight months pregnant when she was stabbed at her home in Thornton Heath in the early hours of Saturday
Paramedics were able to deliver her baby son, who her family named Riley - but he died in the early hours of Wednesday morning.
Police have released CCTV footage of a man seen walking towards the victim’s home before running away from the scene minutes later.
Police are wishing to speak with a man shown on CCTV
Met Police spokesman Mick Norman said they are doing “absolutely everything” in their power to find the person responsible.
“This tragic development makes it even more important that anyone with information comes forward as a matter of urgency,” he said.
“We have released footage as the next step in what has been a fast-paced, and extremely challenging investigation.”
He added: “We need to identify the man shown in the footage urgently, even if only to eliminate him from our inquiries. I need to hear from anyone who knows who he is.”
Detective Chief Inspector Norman said police are unable to say whether Ms Fauvrelle’s attacker was known to her, and are keeping an “open mind.”
“One of the key aims of my investigation is to build a complete picture of Kelly's life and the people with whom she was in contact, but I also need to consider other possible scenarios,” he said.
Two men have been arrested on suspicion of murder.
A 37-year-old was released under investigation on Sunday, and a 29-year-old has been released on bail until early August.