The woman is believed to have been in the park for three or four hours before she was found. All three are being questioned by Scunthorpe police.
Police want to speak to anyone who gave a lift to a bloodstained man on Sunday. Josephine Martin aka 'French Fifi'  Soho, London Strangled with a silk stocking Her murder was linked to the murders of Jeanette Cotton, murdered in April,and of Constance Hind in May,who were also both strangled in their rooms.
The year-old woman was found by a dog walker in the Old Cemetery, West Street, Scunthorpe, on Sunday morning with serious neck and facial injuries. Three held over prostitute attack A man has been arrested on suspicion of attempting to murder a prostitute in North Lincolnshire.
An area of the park was cordoned off for forensic tests to be carried out. She was taken to Scunthorpe General Hospital where her condition was described on Sunday as "very poorly". Another man and a year-old woman have been arrested on suspicion of assisting an offender.