Detectives investigating the killing of Kelly Mary Fauvrelle and her baby in Thornton Heath are returning to the scene to speak to potential witnesses.

An updated appeal from the Met Police has been issued a week on from the murder, which was reported early in the morning of Saturday, June 29.

The investigating officers will be in and around Kelly’s address in Raymead Avenue and nearby London Road between 3 and 4am a on the morning of Saturday, 6 July, exactly one week after the incident.

They are also urging members of the public to look closely at CCTV footage of a man seen in Raymead Avenue, Thornton Heath both before and after the attack, which caused the death of Kelly Mary Fauvrelle and her baby son, Riley.

In the CCTV and images a man is seen walking towards Kelly's address at around 3.15am

They urgently need to trace this man and are asking anyone who may know his identity - or may remember seeing somebody of similar appearance - to contact them.

Detective Chief Inspector Mick Norman is leading the investigation.

He said: “Although clearly quieter than usual at that time of night, Kelly’s address is close to the busy London Road and there will have been a good number of people in the area at the time of the attack. I am certain there will have been several crucial witnesses among them, and I need these witnesses to contact me.

“We have, of course, been speaking to local residents through house to house enquiries and other means, and we are now returning to the scene to speak with potential witnesses who may frequent the area late on Friday and early on Saturday.

“Please do speak with officers – either tonight near the scene or by calling the incident room - if you have seen anything that would help me find the person responsible for these two tragic deaths.

“Among my primary aims is to identify the man seen on CCTV, walking towards the scene and then running away some 10 minutes later. I am asking members of the public to look very carefully at the footage.

Just over 10 minutes after the male was seen walking toward the address, the same male can be seen running back along Raymead Avenue, away from Kelly’s address, toward Colliers Water Lane.

"I know there is not a clear image of the man’s face, but I am certain that somebody will recognise this man from his build, his walk, his run and so on. If you may know who he is, please contact police or Crimestoppers.

“Equally, and perhaps less obviously, do you recall seeing anyone who could possibly be this man in Thornton Heath, Croydon or perhaps further afield last Friday night or early on Saturday morning?

“His identity may not been known to you, but could you have seen him walking, running, on a bus, in a shop, in a takeaway or maybe you drove him as a minicab passenger? Again, if you may have information that will help us establish where he was before and after the attack, I need to hear from you.

"Another key aim is to build a complete picture of Kelly’s life and the people with whom she was in contact. I want to hear from anyone who knew Kelly who has not yet spoken to police."

Anyone with any information should contact police on the dedicated incident room number of 020 8721 4005, or call 101 quoting CAD 1358/29 Jun. Alternatively, to remain anonymous, call Crimestoppers on 0800 555 111.