Police have been searching the Common since the discovery of baby body parts earlier this week.
A search for the remains of a baby in Tooting Bec Common is expected to finish today.
Police have been searching the Common since the discovery of body parts at 08:00 BST on Monday.
The baby’s legs were found in a council depot on Wednesday.
A post-mortem examination took place at Great Ormond Street Hospital on Wednesday and confirmed that the baby was white and less than two weeks old, but could not determine the sex or whether it had been still born.
DNA tests are still being carried out.
The remains were found around two miles from St. George’s Hospital in Tooting.
The police have serious concerns for the mother and have contacted local medical centres and schools in an attempt to identify her.
Speaking to the BBC, Detective Chief Inspector Mark Dunne said: “The focus right now is to identify the parents, particularly the mother because she or they are almost certainly going to be in need of some of the care services support.”
In an appeal to the public, Det Ch Insp Dunne added: “Allow a few moments to ask yourselves ‘do I know anyone who was due to give birth or at the end of their pregnancy term and have I seen that mother or parents since then?’
“Anyone who does contact us, their details will not be revealed to any other party and our inquiries will be discreet.”
No arrests have been made.
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