Four people found guilty of murder after Sheffield shooting
Last updated 17th Dec 2025
4 people have been found guilty of murder after a shooting in Sheffield.
Abdullah Hassan died in 2023 after he was shot in the leg.
Demi Dunford, Alex Taff, Andrew Horton and Osai Williams are set to be sentenced in January.
A Police statement said: "On 9 April, police and paramedics rushed to flats on Callow Drive after residents called for help and attempted to save 26-year-old Abdullah’s life.
"Abdullah was sadly pronounced dead at the scene and a post-mortem confirmed he died of a single gun shot wound to his thigh.
"Detectives and officers immediately came together to understand the circumstances that led to Abdullah’s death, find those responsible, and ensure justice was served.
"Evidence from CCTV, forensics, mobile phone data, and ballistic reports demonstrated to officers that Dunford had been engaged in a dispute with Abdullah for several weeks, following the emergence of drug supply and dealings.
"Keen to prove her status, Dunford orchestrated a plan with Taff, Horton and Williams to shoot Abdullah.
"On 8 April, the gang came together on Callow Drive and called Abdullah to lure him from his property. As he exited the block of flats through the fire exit, he was shot in the upper thigh.
"The gang fled the scene and in the following days, attempted to cover up their work and evidence.
"Dunford and Williams travelled from Sheffield to London, and to Southend-on-Sea, staying overnight in accommodation. After travelling back to Sheffield, Dunford was arrested.
"Two days after the murder, Horton, alongside his sister Emma Horton, took his car that had been used to drive Dunford and Williams away from the scene to a car wash in the Attercliffe area of the city to get it valeted. This was an attempt to clean away any forensic evidence linking Andrew Horton to the murder.
"Detectives uncovered this after recovering their mobile phone and charged Emma Horton with conspiracy to pervert the course of justice.
"A succession of arrests resulted in all four suspects being held in police custody and later charged with murder and various firearms or drugs offences.
"Yesterday, at Sheffield Crown Court, a jury found:
"Demi Dunford, 29, of Derby Street, Sheffield, guilty of murder and two counts of possession of controlled drugs with intent to supply.
"Alex Taff, 31, of Springfields, Rotherham, guilty of murder.
"Andrew Horton, 48, of HMP Doncaster, guilty of murder and conspiracy to pervert the course of justice.
"Osai Williams, 29, of HMP Lowdham Grange, guilty of murder.
"Emma Horton, 38, of Blackstock Road, Sheffield, guilty of conspiracy to pervert the course of justice."
Senior Investigating Officer in the case, Detective Chief Inspector Andy Knowles, said:
“After a lengthy investigation, justice has been secured for Abdullah, and our thoughts remain with all who loved him.
“Gun crime and drugs are inseparably linked, with disputes over supply, territory, and profit often spiralling into violence, and in this case, murder.
“This dangerous connection does not only affect those directly involved; it creates volatile situations where innocent people can tragically be caught in the crossfire. That is why we are determined to remove these dangerous offenders from our communities.
“The ripple effect of drugs and firearms spreads fear, destabilises neighbourhoods, and underlines the urgent need for communities to support our efforts.
“Together, we can ensure that offenders like Dunford, Taff, Horton, and Williams remain behind bars.
“Yesterday’s verdict brings closure to a lengthy and complex investigation, and I extend my gratitude to everyone who contributed, including members of the public and my team of officers who worked tirelessly to achieve justice for Abdullah and his family.”
Dunford, Taff, Horton and Williams will appear before Sheffield Crown Court on 16 January 2026 for sentencing.