“They are not prepared to accept that the investigation is complete simply because the American authorities have decided not to take the matter further.
“They want the evidence properly examined, the unanswered questions addressed and the authorities to make their decisions on the basis of all the relevant information, rather than evidence which is so obviously incomplete.
“That is all the family are asking for. A proper examination of the evidence, and a fair opportunity for the outstanding questions surrounding Lucy’s death to be answered.”
Ms Harrison’s mother, Jane Coates, has long-campaigned for justice for her daughter, repeatedly urging US authorities to reopen the case.
She said she felt “deserted by the British authorities” throughout the campaign, calling on the Government to throw its weight behind her case.
