An acting detective chief inspector (ADCI) will face a misconduct hearing for his role in a missing person's case.
Saima Ahmed disappeared from her home in Wembley on August 30 2015, and months later on January 10 2016 her body was discovered 400 miles away on a golf course near Edinburgh.
To date, no suspicious circumstances surrounding the death have been identified, and her family say they do not know why she would have travelled to the Scottish capital.
The detective is being investigated for failing to pursue lines of enquiry regarding the 36-year-old's last known sighting, the Independent Police Complaints Commission (IPCC) has said.
There may have been a breach of professional standards.
In a statement, the IPCC said: "In the opinion of the IPCC lead investigator, the ADCI has a case to answer for misconduct for failing to pursue lines of enquiry arising out of Saima’s last known sighting or document a rationale for not doing so.
"This may have been a breach of his professional standards. The IPCC investigation also examined the actions taken by officers following the initial reports of Saima’s disappearance by her family and the subsequent investigation and reviews conducted.
"In the opinion of the IPCC lead investigator, the initial call handling response was appropriate and officers were sent to visit the family quickly.
"However, there appear to have been inconsistencies and omissions in the recording of information at this early stage.
"Some relevant details were therefore unavailable to investigators and this affected the investigation and its risk assessments.
"Two police constables will face unsatisfactory performance procedures in relation to these matters."
IPCC commission-delegate Colin Dewar said: “The IPCC investigation into how the Metropolitan Police handled Saima Ahmed’s disappearance formed the opinion that, in places, officers may not have met the levels required by their professional standards.
"It is important that improvements are made for future investigations and that the officers will be accountable for their actions.”
The police watchdog found no case to answer against two more officers, a detective inspector and a detective constable, both based in Brent borough.
Police Scotland continues to investigate the unexplained death.
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