Police have appealed for information over the murder of an aircraftswoman at an RAF base in Buckinghamshire 53 years ago.
Rita Ellis was 19-years-old when she was sexually assaulted and strangled at RAF Halton on 11 November 1967.
Her body, which had been covered by leaves and foliage, was found on the base the next morning by a dog-walker, near a disused railway.
Peter Beirne, from Thames Valley Police Major Crime Review Team, said: "There will be people out there who have suspicions about who murdered Rita Ellis and we want to hear from them.
"Just give us the name of who you suspect, we don’t need any of your personal details. Call 101 or email [email protected] with the name of the person or persons you suspect.
"The person responsible for Rita’s murder will have had this horrific act on their conscience for 53 years, and there has to be a possibility that they have confided in someone during this time.
"If you have any information, even if you think the information is insignificant, please come forward."
Mr Beirne appeared on BBC's Crimewatch programme on Monday morning to re-appeal for information regarding the murder.
Miss Ellis, who was from Stevange in Hertfordshire, joined the RAF in April 1967, initially training in Lincolnshire before moving to RAF Halton in June of that year.
She was a trade assistant and was obtaining extra qualifications as part of her training with the RAF.
Speaking three years ago on the 50th anniversary of Miss Ellis' death, her sister Tina said: "It’s been a long time coming but we want justice for Rita.
"Someone somewhere must have some information. I urge them to please come forward to the police and give us closure and allow Rita to be at peace."
Cover image: Rita Ellis (Picture: Thames Valley Police).