A third man has been arrested in connection with the disappearance of a student nurse - last seen in West Croydon.
Owami Davies, from Grays in Essex, left her family home on Monday, July 4.
The 24-year-old was last seen just after midnight in Derby Road in West Croydon, on Thursday, July 7.
A 32-year-old was arrested on suspicion of murder on Tuesday at a home in South Croydon and remains in custody.
Two other men, aged 27 and 23, were arrested on suspicion of murder in the Croydon area on Monday.
Police say this is still a missing person investigation and that their priority is finding Owami.
Any witnesses or anyone with any information is asked to call police on 101 quoting reference 22MIS025307.
A spokesperson for the Metropolitan Police said: "A third man has been arrested in connection with the disappearance of Owami Davies, who was last seen in West Croydon.
"The 32-year-old [C] was arrested on suspicion of murder on Tuesday, 2 August at an address in South Croydon and remains in custody.
"This remains a missing person investigation and our priority is finding Owami.
"On Monday, 1 August, two men, aged 27 [A] and 23 [B], were arrested in the Croydon area in connection with the investigation.
"They were taken to a south London police station where they remain in custody.
"Detectives from the Met's Specialist Crime Command are currently at a property in Derby Road as part of their enquiries into Owami’s disappearance.
"Owami from Grays, in Essex, left her family home on Monday, 4 July and was last seen at 00:03hrs in Derby Road, West Croydon, on Thursday, 7 July.
"Owami's family are being kept updated about the progress of the investigation.
"Any witnesses or anyone with any information is asked to call police on 101 quoting reference 22MIS025307.
"You can also provide information anonymously to the independent charity Crimestoppers."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here