According to the prosecution’s opening, Mosquera had been staying with the couple at their flat on Scotts Road in Shepherds Bush when he killed them on July 8, 2024. He has pleaded not guilty to the charges of murder but admitted to the manslaughter of Mr Alfonso, claiming he lost control. Prosecutors allege, however, that both killings were intentional and part of a disturbing plan.
It was revealed in court that Mosquera had a sexual relationship with Mr Alfonso, who had an interest in extreme sexual practices. Prosecutor Deanna Heer KC told the jury that the pair had likely met online through a pornographic platform. Evidence indicated that Mosquera not only engaged in these acts with Mr Alfonso but also recorded them, uploading content to the internet. While Mr Longworth was not directly involved in these activities, he was aware of their existence. The two men had entered a civil partnership in 2023.
The court heard that Mosquera had visited the UK multiple times and had also hosted the couple in Colombia earlier in 2024. During that trip, they were pictured together enjoying a boat ride, apparently having a pleasant time, which made the violence that followed months later even more shocking. Jurors were told that Mosquera had conducted online searches in Spanish such as “Where on the head is a knock fatal?” and browsed listings for chest freezers prior to the killings, suggesting premeditation.
The prosecution described how Mr Longworth was attacked first. He died after suffering blunt force trauma to the head, allegedly delivered by a hammer. His body was hidden in a divan bed in the shared flat. Mosquera then turned his attention to Mr Alfonso, who he reportedly stabbed to death in a frenzied knife attack using a kitchen blade. Chillingly, jurors were shown a video recorded by Mosquera himself, showing the fatal stabbing of Mr Alfonso. After the attack, Mosquera is seen singing, dancing, and attempting to access Mr Alfonso’s online banking accounts.
Following the killings, Mosquera tried to withdraw money from several of Mr Alfonso’s bank accounts, but the transactions were eventually blocked as suspicious activity was detected. Several withdrawals were successfully made before the cards were declined.
Just two days after the murders, on the night of July 10, a cyclist crossing the Clifton Suspension Bridge in Bristol encountered Mosquera standing beside a large red suitcase and a silver trunk. When approached, Mosquera claimed he was carrying car parts. However, the prosecution told the court that those suitcases in fact contained the dismembered remains of both Mr Alfonso and Mr Longworth. Authorities later blocked off access to the bridge, and a police cordon was put in place as the remains were recovered.
In court, Mosquera appeared dressed in a white shirt and blue jeans, with rosary beads around his neck. He listened attentively to the proceedings with the assistance of a Spanish-language interpreter.
The trial is ongoing, and jurors are expected to hear further evidence in the coming days. The prosecution maintains that Mosquera's actions were deliberate and fueled by motives that remain under scrutiny, while the defense will argue that his responsibility is diminished due to a claimed loss of self-control.