A £50,000 reward has been offered for information to lead to the arrest and conviction of the person who killed a Leigh schoolgirl 33 years ago.

Greater Manchester Police (GMP) has launched the appeal on the anniversary of her death on Friday to track the killer of 14-year-old Lisa Hession, who was strangled on Saturday, December 8 a short distance from her home on Bonnywell Road at around 10.30pm.

Her body was discovered shortly before midnight by a dog walker on Rugby Road.

A full investigation into Lisa's murder followed but her attacker has never been found.

Head of the Cold Case Unit Martin Bottomley said: “This case has been subject to a number of reviews since 1984 to find the answers Lisa’s family so desperately deserve.

“The reviews have concentrated on using advances in forensic techniques and investigating all the information we have received from members of the public so far.

“While we have not found the answers yet, this case will remain open until Lisa’s killer is found and brought to justice.

Lisa's mum Christine Hession died in June 2016 at the age of 69 following a short battle with cancer.

Speaking in 2014 on the eve of the 30th anniversary of Lisa's death, Christine said she still lived 'in hope' that her daughter's killer would be found. 

Mr Bottomley added: “Even though this happened 33 years ago, I am sure that someone who lived in the area at the time will know something that could help our investigation.

“Anything you know, no matter how insignificant it may seem, could be the key to uncovering who is responsible for Lisa’s death.”

If you have any information about the incident contact the police on 0161 8565961 or call the independent charity Crimestoppers, anonymously, on 0800 555 111.