Detectives investigating the disappearance of student nurse Owami Davies a month ago are continuing to question a man over her alleged kidnap.
Owami, 24, left her family home in Chafford Hundred, Grays and was last seen on a shop’s CCTV just after midnight in Derby Road, West Croydon on July 7.
An unconfirmed sighting placed her in nearby Clarendon Road about 7am that day.
Officers have arrested five people – two on suspicion of murder and three on suspicion of kidnap.
The most recent was a 27-year-old man arrested on suspicion of kidnap on Saturday.
Four of those arrested have since been released on bail.
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 inquiry, including extensive CCTV trawls, as we continue to search for Owami.
“We are now a month on from the last confirmed sighting of her. I cannot imagine what that time has been like for her family. We continue to provide them with whatever support we can.
“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.”
Investigators have previously appealed for the driver of a white van that was parked in Derby Road when Owami was last seen to come forward.
She and a man crossed the road just as the van pulled out.
Owami’s mother Nicol Davies has made public appeals through the police for help finding her daughter.
She said: “This is such a terrible time for all those who love Owami and I am pleading for anyone who can help find her to contact police.
“Every day we hope to hear the news that Owami is coming back to us, your help might make it so.”
Owami was nearing the end of her studies and had secured a job with Guy’s and St Thomas’ Hospital.
She had worked in A&E during the Covid-19 pandemic and was interested in doing research on diseases.
Anyone with information is asked to call the incident room on 020 8721 4622 or Crimestoppers anonymously on 0800 555 111.