The step-father of Paige Doherty has shared his devastation after killer John Leathem had his sentence reduced by four years. 

John Leathem admitted killing the 15-year-old when she stopped for a breakfast roll at his Delicious Deli in Clydebank, West Dunbartonshire, on March 19 last year.

He was given a mandatory life sentence at the High Court in Glasgow in October and ordered to spend at least 27 years behind bars, but launched an appeal against the minimum jail term later that month.

Senior judges at the Appeal Court in Edinburgh have now quashed the original punishment and imposed a 23-year sentence.

Step-father Andy Munro, alongside Paige's mother Pamela Munro spearheaded a campaign for justice in a bid to stop Leathem's appeal.

A petition opposing a cut in his jail term had been signed by around 11,000 people.

He posted: "There is no justice" in a heartbroken statement to his Facebook page. 

Hundreds of sympathisers have offered their thoughts to the family of Paige Doherty following the verdict.

The verdicr, delivered by Lord Turnbull, reiterated that Leathem had committed a "most appalling murder" but said other circumstances needed to be given "proper weight".

At a hearing in December, Leathem's lawyer Iain Duguid QC said the punishment part of his client's sentence was higher than other child murder cases and ''represents a significant increase in the tariff'' for such offences.

He compared the sentence handed down in other cases such as the 23 years given to Alexander Pacteau for the murder of Irish student Karen Buckley.

Ruling on Leathem's appeal, the judges said: "The appellant was a family man of previous good character who had not offended before and who had expressed remorse.

"The murder was not premeditated.

"The extent of his efforts to defeat the ends of justice can be measured against certain of the conduct which took place in some of the other cases referred to above.

"When these circumstances are all taken account of, we think it can be said that the length of the punishment part selected in this case was inconsistent with current sentencing practice and was excessive."

The opinion ended: "For the reasons which we have set out above, we shall quash the punishment part imposed in this case and substitute therefor a period of 23 years."