A murderer serving a life sentence for the deaths of five children and three adults in a house fire has had his minimum jail term increased by the Court of Appeal.

Eight members of the Chishti family died when Shahid Mohammed, 37, carried out the attack with other men following a long-running and bitter family dispute.

The victims were asleep in their home on Osborne Road, Birkby, Huddersfield, when petrol bombs were thrown inside the property – with petrol also being poured through the letterbox and ignited, in May 2002.

Mohammed, who was 19 at the time, was investigated by the police for his role in setting the fire, but while others stood trial in 2003 he instead skipped bail and fled to Pakistan.

After more than a decade on the run, he was extradited back to the UK in 2018.

He was jailed for at least 23 years at Leeds Crown Court in August last year after being found guilty of eight counts of murder and one of conspiracy to commit arson with intent to endanger life.

But his minimum term was increased to 27 years at a Court of Appeal hearing on Thursday, after senior judges ruled it was “unduly lenient”.

Lord Justice Holroyde, sitting with Mrs Justice Whipple and Judge Mark Lucraft QC, said the court would give its full reasons for increasing the sentence at a later date.

The court rejected a bid by Mohammed to have his tariff reduced.

Mohammed’s sentence was referred to the court by the Attorney General’s Office (AGO) under the unduly lenient sentencing scheme.

Those left behind to grieve will never come to terms with their loss

Lawyers representing Solicitor General Michael Ellis argued the 23-year tariff was not long enough for his crimes.

Sarah Whitehouse QC said there were a number of “aggravating factors” relating to Mohammed – including his flight from the UK and evasion of justice for more than 10 years – which did not apply to one of his co-conspirators, who received a minimum term of 22 years after being convicted of murder.

On behalf of Mohammed, Abbas Lakha QC argued that his minimum term should be cut, in light of his youth at the time of the offence and the fact he did not play the leading role in the plot.

However, Lord Justice Holroyde rejected that contention and increased Mohammed’s tariff.

In a statement after the hearing, Mr Ellis said: “Eight innocent lives were lost, including five small children under 13 in an utterly odious and wicked attack perpetuated because of a personal dispute.

“The offender then extended the pain and suffering of the victims’ relatives by fleeing the jurisdiction and avoiding justice for many years.

“It is vital that Mohammed’s sentence reflects this.”

During a four-week trial at Leeds Crown Court jurors were told that, in the lead-up to the fire, Mohammed had taken against Saud Pervez, the boyfriend of his sister, Shahida.

Prosecutors said that Mohammed Ateeq-Ur-Rehman, one of those who died in the fire, was the likely target of the arson attack as he had played an “active part” in maintaining the relationship.

As well as 18-year-old Mr Ateeq-Ur-Rehman, known as Ateeq, his sister Nafeesa Aziz, 35, died along with her children, Tayyaba Batool, 13, Rabina Batool, 10, Ateeqa Nawaz, five, Aneesa Zawaz, two, and Najeebah Nawaz, who was six months old.

Zaib-Un-Nisa, 54, the children’s grandmother and mother of Ms Aziz and Ateeq, died in hospital after jumping out of a window in a bid to escape the flames during the attack, which took place on May 12 2002.

Sentencing Mohammed, Mr Justice Robin Spencer QC told Leeds Crown Court that, following the attack, the family home was a “burning inferno”.

He said: “Those left behind to grieve will never come to terms with their loss. Words cannot express the depth of their pain and distress.”

The judge said that, had Mohammed not fled to Pakistan, he would have given the family closure and prevented them from waiting more than a decade for justice to be done.

One surviving member of the family, Siddiqah Aziz, told jurors how she managed to save her father, Abdul Chishti, from the fire but was prevented from coming to the aid of other family members when she was met by a wall of flames.

Prosecutors said those who were upstairs were “overwhelmingly likely to be trapped” by the fire that rapidly developed once the petrol had been ignited.

A year after the killings, three men were convicted over their involvement, with Shaied Iqbal being found guilty of eight counts of murder, while Shakiel Shazad and Nazar Hussain were convicted of manslaughter.