In connection with the disappearance of student nurse Owami Davies, a fourth man has been arrested.
On July 4, the 24-year-old went missing after leaving her home in Grays, Essex.
She was last seen in Derby Road, West Croydon, south London, shortly after midnight on July 7.
Her mother made a “desperate” plea to the public on Wednesday to assist in the search for her daughter, who she said was months away from finishing her nursing course and starting a job at Guy’s and St Thomas’ hospital.
“I am begging, I am asking for the public’s help, from the people, to say if you know, if you have heard or seen her, or she passed you, please speak up,” Ms. Davies’s mother, Nicol Davies, said.
The Metropolitan Police detained a 22-year-old man on suspicion of murder on Thursday at a Croydon house.
After three guys, aged 23, 27, and 32, were previously held by police, he is the fourth individual to be taken into custody.
New CCTV photographs of Ms. Davies from the evening she was last seen in a store and on Derby Road were also made public by the police.
The driver of a white van that was parked on the road is sought by investigators.
According to authorities, Ms. Davies crossed the street with a guy just as the van started to move, giving the driver a “excellent opportunity” to see both of them.
The Met Police stated that this is still a missing person investigation.