Yostin Andres Mosquera

Yostin Andres Mosquera, a 35-year-old Colombian national, was sentenced to life imprisonment with a minimum term of 42 years at Woolwich Crown Court for the brutal murders of Albert Alfonso, 62, and Paul Longworth, 71, on 8 July 2023. The killings took place in the victims' flat on Scotts Road in Shepherd’s Bush, west London, where Mosquera had been staying. Following the murders, Mosquera decapitated and dismembered the bodies, froze parts of the remains, and transported the rest to Bristol, where he dumped them in suitcases near the Clifton Suspension Bridge.

The court heard that Mosquera repeatedly stabbed Mr Alfonso in the torso, face, and neck during a filmed session in their flat, with footage showing Mosquera asking, “do you like it?”, before singing and dancing after the attack. Mr Longworth was bludgeoned to death with a hammer, shattering his skull. Mr Justice Bennathan described the crimes as “premeditated and thoroughly wicked,” noting that the victims were a settled, affectionate couple who had shown Mosquera kindness and generosity. The judge highlighted Mosquera’s immediate attempts to access the victims’ bank accounts and his premeditated actions, including purchasing a chest freezer and conducting internet searches on inflicting fatal injuries.

In addition to the murders, Mosquera pleaded guilty on the day of sentencing to three counts of possessing child pornography, including at least 1,500 Category A images or pseudo-photographs of children, 750 Category B images, and 4,000 Category C images, some of which were videos. For these offences, he received a concurrent sentence of 16 months’ imprisonment. A psychiatric report indicated no diagnosed mental disorder but referenced Mosquera’s childhood exposure to violence in Colombia, where he witnessed the killing of other children, which may have influenced his perception of violence. Despite this, the judge opted against a whole-life order, citing Mosquera’s lack of prior convictions.

Detective Chief Inspector Ollie Stride, leading the investigation for the Metropolitan Police, described the case as one of the most harrowing he had encountered, involving hundreds of hours reviewing footage, including repeated viewings of Mr Alfonso’s murder. He praised the victims’ loving relationship and condemned Mosquera as an “evil and dangerous offender” who exploited their generosity. Senior Crown Prosecutor Miranda Jollie emphasised the calculated nature of the attacks, stating that Mosquera “planned and calculated every action in the lead-up to the killings.” The sentencing on 24 October 2025 brought justice for the victims, with thoughts extended to their loved ones.