The Metropolitan Police are under investigation after the watchdog learned that officers had previously been in contact with missing nursing student Owami Davies.
The 24-year-old from Essex was last seen on July 7 in Croydon after leaving her family’s home in Grays, Essex, three days earlier, and has yet to be found.
His family reported him missing to Essex police on July 6, and the force later handed over the file to the Met on July 23.
However, on Saturday, Scotland Yard revealed that its officers had spoken to Ms Davies on July 6, after responding to an address in Croydon about concerns about a woman’s welfare.
Both the police and the ambulance service attended and spoke to Ms Davies, who told them that she did not want any help.
At the time, she had not been marked as a missing person in the police database, and was only later established to be Mrs Davies during the investigation to find her.
The Met said it is not investigating the officers in question, and its professional standards body has been consulted, adding that the Independent Office for Police Conduct (IOPC) has requested that the matter be referred to them.
In a statement, Scotland Yard said: “The Met’s Directorate for Professional Standards (DPS) was consulted and, as there was contact with the police, the IOPC was informed.
“The IOPC has requested that the matter be referred to them.
“The officers are not subject to any current investigation by DPS.
“The officers’ body video recorded interaction has been viewed by members of the Independent Advisory Group and Owami’s family to ensure openness and transparency.”
The IOPC said in a statement: “We can confirm that we received a referral on August 5 from the Metropolitan Police Service in relation to contact officers had with Owami Davies in Croydon on July 6, after he was reported missing to Essex Police.
“We are currently evaluating available information to determine what additional action may be necessary.”
A new appeal to find Ms Davies was launched last week, with British Transport Police saying they may still be using trains in the area.
The Metropolitan Police added: “Owami has been depressed and, in the absence of her medication, she may use alcohol to ease her depression.”
So far, five people have been arrested as part of the investigation, two on suspicion of murder and three on suspicion of kidnapping, all of whom have been released on bail.
Anyone with information is asked to call the incident room on 020 8721 4622 or Crimestoppers anonymously on 0800 555 111.