Police have reopened an investigation into the murder of a teenager who was strangled and dumped in a shallow grave 25 years ago.
The body of 19-year-old Dawn Shields was discovered buried under rocks in the Peak District on 20 May 1994.
South Yorkshire Police said she led a "troubled life" and was pressurised into prostitution from the age of 14.
The force said advancements in DNA techniques may now help find her killer.
Ms Shields, from Pitsmoor in Sheffield, was last seen getting into a car in Broomhall on 14 May 1994.
Police reopen 1994 strangle murder probe