Police investigating the rape and attempted murder of a woman have found the attacker's DNA.
Officers are now able to start excluding people from their enquiries after the victim was attacked in Ilkeston last year.
Derbyshire Police have also revealed a number of people have been released after securing this DNA.
The woman was walking along Queen's Avenue on November 26 when she was approached by a man. He grabbed her, strangled her and then raped her.
DCI Gareth Meadows is urging anyone who is 'suspicious of a friend or family member' to get in touch about this 'horrendous' attack.
He has also appealed for anyone who was on a Trent Barton bus from Nottingham to Ilkeston. He said:
Crimestoppers charity have also offered a £10,000 reward for information leading to the arrest and conviction of the offender.
Lydia Patsalides, East Midlands Regional Manager for Crimestoppers, said: