Detectives investigating the mysterious death of Bradford teenager Donna Healey are to interview several people who have come forward with new information.

More than 20 people called police after a fresh appeal about Donna's suspicious death was broadcast on the BBC's Crimewatch UK programme this week.

And Detective Inspector Chris Binns, who is leading the investigation, said a handful of the calls had been particularly interesting.

"Nobody has given us information on where the body has been but we have traced two, and possibly three, people who knew Donna and may be able to give important background information," said Det Insp Binns.

He said one of the callers was a former prostitute who worked with 18-year-old Donna in the Chapeltown area of Leeds during the late 1980s. Another is a former schoolfriend.

The teenager, whose family lived in Roxby Street, Little Horton, was last seen alive on March 22, 1988, when she appeared before Leeds magistrates on a prostitution charge.

Her partly-clothed and mummified body was found nearly three years later in an overgrown garden at a private clinic in Chapel Allerton, Leeds, on January 15, 1991.

The cause of death has never been established but it is being treated as suspicious. Police believe she probably died in 1988 and her body was then kept in an airtight environment before being dumped.

Det Insp Binns, of Bradford South CID, said police would be interviewing the callers in the next few weeks.

He added: "They are local to Bradford and Leeds and both have described themselves as knowing Donna reasonably well. The former prostitute said she worked in Leeds with her and that could be quite promising information."

Det Insp Binns renewed his appeals for information and is keen to hear from Donna's schoolfriends. She left school at the age of 16 after attending Fairfax Upper and Wyke Manor Upper.

He said: "I am surprised that more of Donna's schoolfriends have not come forward. I would urge anyone with any information whatsoever on Donna to get in touch with us and let us be the judges of whether it is significant or not."

The body was only identified as that of Donna late last year after DNA breakthroughs matched a sample from her with saliva from her mother Lorraine Wilkinson.

Forensic experts are now meticulously examining clothes Donna was wearing when she was found and grass and dirt recovered from the scene in the hope of uncovering more clues.

Anyone with information should call the incident room on (01274) 376915.