A 31-year-old woman from Luton has been arrested over the disappearance of a baby not seen for more than 11 years.
Detectives from the Homicide and Major Crime Command (HMCC) launched an investigation into the disappearance of the child from Barnet following a case review into the death of another child in 2015.
On May 30 detectives arrested a 50-year-old woman from Fryent Crescent, West Hendon.
A 31-year-old woman from Luton was also arrested on suspicion of murder.
During a search of the Fryent Crescent address police found human remains that are believed to be that of a child.
A special post-mortem examination took place at Great Ormond Street Hospital on Thursday (June 2) and the cause of death could not be determined. Further tests will be undertaken and this could take a number of weeks.
Both women have been re-arrested on suspicion of preventing a lawful and decent burial.
A 52-year-old man was also held over the same offence.
In a statement Met Police said: “We will not speculate on the identity of the child until all further tests have concluded.
“Given the circumstances which led to the launch of this investigation officers from the Directorate of Professional Standards (DPS) have been informed.
“A referral to the Independent Police Complaints Commission (IPCC) has been made.
“Detectives continue to investigate and are liaising with partner agencies.”