Sallyann John: Missing Swindon woman case now murder inquiry
The disappearance of a woman 20 years ago is now being treated by detectives as a murder inquiry.
Sallyann John, then 23, disappeared from Swindon in 1995. She had been working as a prostitute.
She was classified as a missing person but police now believe she was killed. Her body has never been found.
The reinvestigation was prompted by a review and the discovery of "significant new information", Det Insp Tim Corner of Wiltshire Police said.
Det Insp Corner refused to say what new lines of inquiry were being followed up.
He also said that at the moment, the inquiry is not being linked to the ongoing investigation at convicted killer Christopher Halliwell's former home.
Ms John was last seen on Aylesbury Street at 10:45 BST on Friday 8 September 1995.
The address is close to the area of Swindon associated with on-street sex workers.
Police have appealed for witnesses, saying that over such a long period of time relationships may be different and that all information would be treated in the strictest confidence.