Police looking for the 33-year-old who was last seen in London a week ago arrest two people in Kent.
A Metropolitan Police officer has been arrested over the disappearance of Sarah Everard in south London in a “serious and significant development”.
Ms Everard, 33, was last seen in Clapham at about 21:30 GMT on 3 March.
Police said they arrested a man in Kent on Tuesday evening in connection with her disappearance, adding that the fact he was a serving officer was “shocking and deeply disturbing”.
A woman was also arrested on suspicion of assisting an offender.
Police said Ms Everard’s family was being kept updated.
In a statement, the Met Police said the man and the woman had both been taken into custody at a London police station.
Assistant Commissioner Nick Ephgrave said: “The arrest this evening is a serious and significant development. We will continue to work with all speed on this investigation but the fact that the arrested man is a serving Metropolitan Police officer is both shocking and deeply disturbing.”
Det Ch Insp Katherine Goodwin said: “This is a fast-moving investigation and we are doing everything we can to find Sarah.
“We have seen an overwhelming response from the public and I repeat my request for anyone with information that may be relevant to come forward, no matter how insignificant it may seem.”
The development comes after officers searching for Ms Everard put up a cordon outside a block of flats near to where she was last seen on the A205 Poynders Road.
The cordon extends along Poynders Road from Rodenhurst Road to Cavendish Road.
Police sniffer dogs were used to search the nearby Oaklands Estate and gardens. Officers were also seen searching drains along the street Ms Everard was last seen.
The Met said officers had visited 750 homes in the area as part of the investigation and the force had received more than 120 phone calls from the public.
Friends and relatives have issued appeals on social media to help find the marketing manager, who vanished on her walk home to Brixton after leaving a friend’s flat in Leathwaite Road, Clapham Junction at about 21:00 GMT on 3 March.
Her family has said it is out of character for her to disappear.
Ms Everard, who is originally from York and attended Durham University, was last seen wearing a green rain jacket, navy blue trousers with a white diamond pattern, and turquoise and orange trainers. She is thought to have been wearing green earphones and a white beanie hat.
She is believed to have walked through Clapham Common towards her home – a journey that should have taken about 50 minutes.
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