A fifth man has been arrested in connection with the disappearance of student nurse Owami Davies, who was last seen more than a month ago.
The Metropolitan Police has confirmed a 27-year-old-man was arrested on suspicion of kidnap on Saturday 6 August.
“We are now a month on from the last confirmed sighting of her”
Four men previously arrested in connection with the disappearance have been released on bail.
In total, there have now been five arrests – two on suspicion of murder and three on suspicion of kidnap.
Ms Davies, who was studying at King’s College London, was last seen in the early hours of Thursday 7 July walking along Derby Road in West Croydon.
A “second unconfirmed sighting” has also been reported on the same day, at around 7am, and nearby Clarendon Road, the police said.
She had left her family home in Grays, Essex three days earlier on Monday 4 July.
Detective chief inspector Nigel Penney, who is leading the investigation, said: “This is a complex ongoing investigation involving a significant number of officers.
“We are working tirelessly to follow every line of enquiry, including extensive CCTV trawls, as we continue to search for Owami.
“We are now a month on from the last confirmed sighting of her,” he said. “I cannot imagine what that time has been like for her family. We continue to provide them with whatever support we can.”
He added: “I am grateful for the help we have received from the public so far, but I must again appeal for anyone who has information – however insignificant they believe it might be – to get in touch.”
A King’s College London Spokesperson said: “Owami is a valued member of the King’s community.
“We are deeply concerned about her disappearance, and we continue to hope for her swift and safe return.
“We are keeping Owami, her family, and her friends in our thoughts during this difficult time. Our immediate priority is cooperating with the London Metropolitan Police in their investigation.”
Last week, her mother, Nicol Davies, appealed to her daughter to get in touch with her family and asked anyone who could help find her to contact the police.
The Metropolitan Police also released CCTV images of Ms Davies on the night she was last seen, walking in Derby Road and in a shop.
They are are particularly keen to speak to the driver of a white van that was parked in Derby Road at that time. Ms Davies crossed the road with a man just as the van drove off.
Anyone with information should call detectives on 020 8721 4622.
Alternatively, information can be provided anonymously to the independent charity Crimestoppers by calling 0800 555 111 or visiting www.crimestoppers-uk.org.