Detectives have questioned supermodel Kate Moss at a police station in central London about allegations that she used cocaine.
Kate Moss is driven away after 80 minutes at a police station
The 32-year-old reported voluntarily to police. Scotland Yard said that she was not arrested or cautioned and inquiries were continuing.
Moss entered a rehabilitation clinic after pictures of her allegedly using the drug were published in September.
She also lost lucrative contracts with H&M, Burberry and Chanel.
A Metropolitan Police spokesman said: "A file will eventually be submitted to the Crown Prosecution Service depending on the entirety of the investigation."
A spokesman for Moss' agency Storm said the model had spent 80 minutes at the police station.
"Kate Moss voluntarily reported to the police today to assist their investigation as she has always said she would when she returned to this country," he said.
Moss had been staying outside the UK since the images were published.
Niamh Eastwood, legal adviser at drugs charity Release, said police had to act in such a high profile case.
"We are pleased to see that Miss Moss has decided to return to the country today," she said.
Moss released a statement in which she accepted full responsibility for her actions following the publication of the images.
She then went to a drug rehabilitation clinic in Arizona, and is now thought to be planning to settle in Los Angeles with her three-year-old daughter, Lila Grace.
Earlier this month, one of Scotland Yard's most senior officers, Assistant Commissioner Tarique Ghaffur, urged Moss to return to Britain to tell police "her side of the story".
She arrived home at her Cotswolds mansion without speaking to reporters waiting outside.