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23 December 2014, 06:23
The mum of murdered Sunderland schoolgirl Nikki Allen, whose body was found more than 20 years ago, is launching a fresh appeal for information.
Sharon Henderson's working with detectives to find the person responsible for the attack on her 7 year old daughter in 1992.
Nikki vanished after leaving her grandparents' flat in Wear Garth, East End.
Her shoes were discovered outside the derelict Exchange building a few hundred yards away the next morning.
Her body was found inside the building by a neighbour helping police with the search.
She had been stabbed 37 times in the chest.
Nikki would have celebrated her 29th birthday this year.
Sharon, who's from Ryhope, told Heart:
"I just hope somebody has got a heart or some conscience to come forward and give us that information.
The fight I've put up, I don't want it to happen to any other family.
A mother or a father shouldn't have to fight for justice.
I'm not just after getting justice for the people who murdered Nikki, I'm also after the people who've covered Nikki's case up."
DNA tests are currently being carried out on Nikki's clothing in the hope it will provide clues in catching her killer.
In 1993, George Heron was acquitted of Nikki's murder by a jury at Leeds Crown Court in 1993.
Earlier this year, Northumbria Police arrested a 47-year-old Sunderland man on suspicion of Nikki's murder.
He was questioned and bailed but was then released with no further action.
The case was featured on Crimewatch last year, on the 21st anniversary of Nikki's death.