Police are still trying to identify the woman, who they say is aged between her mid-teens to late 20s.
A woman whose body was found in a lay-by, prompting a murder inquiry, had been set alight, police have said.
Staffordshire Police said the body was found just before 03:00 BST on Monday, on Bridgnorth Road in Perton.
The force said they are still trying to identify the woman through forensic testing, but said she was aged somewhere between her mid-teens to late 20s and of slim build.
Officers appealed for anyone who may have information to come forward.
Det Supt Tom Chisholm said the force was conducting multiple inquiries after the body was found with “significant burn marks”.
He said the body had been burned at the scene, possibly with the use of a form of accelerant, and it is believed she had been driven to the site.
Det Supt Chisholm appealed for any witnesses who were in the area at the time, or who had dashcam or CCTV footage to come forward.
He also asked anyone who was aware of any missing girls or women to speak to officers.
“We really need to find out who this young woman was, so that we can hopefully identify how she got there and what happened to her,” he added.
“This was a shocking and dreadful incident and we are determined, with your help and support, to bring those responsible to justice.”
The force said Bridgnorth Road remained closed in both directions from Tinacre Hill to the junction with Jenny Walkers Lane while forensic teams continued their investigations.
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