Man Found Dismembered in Suitcase Accused of Raping and Blackmailing Teen in Court Testimony

Victims Paul Longworth and Albert Alfonso (left to right) were found dismembered in a suitcase

Disturbing details have emerged during the trial of Yostin Mosquera, 35, who stands accused of murdering and dismembering Albert Alfonso, 62, and Paul Longworth, 71. The dismembered remains of both men were discovered in July 2024, packed into a suitcase and a trunk and left near the Clifton Suspension Bridge in Bristol. While Mosquera admits to the manslaughter of Alfonso, he denies both murders.

Testimony from a witness under the pseudonym James Smith, delivered via video to the Old Bailey, described a history of sexual abuse at the hands of Alfonso dating back nearly 20 years. Smith said he met Alfonso at a rugby match when he was around 17 or 18. He accepted an invitation to Alfonso’s flat for drinks and recalled waking up with a “banging headache” and no memory of the events.

Yostin Andres Mosquera denies both murders

According to Smith, Alfonso later showed him a video of himself being sexually penetrated while unconscious. “I said to him, ‘What’s happened?’ — he showed me a video of me on all fours and he was penetrating me,” Smith told the court. He said he felt mortified, confused, and scared, especially as he had not yet come to terms with his sexuality at the time.

Alfonso allegedly assured Smith that the video would remain private—unless Smith refused to do "favours" for him. Smith testified that these encounters became transactional, with Alfonso paying him around £150 for each meeting. Over time, their relationship developed into regular BDSM-themed sessions, including domination and mask use. Smith admitted he would sometimes initiate contact when he needed money.

The remains were found by the suspension bridge

Under questioning, Smith confirmed that in hindsight, he believed he had been raped, drugged, and groomed by Alfonso. He also stated Alfonso expressed fantasies involving “black dominatrix” and “master-slave” dynamics.

During the COVID-19 pandemic, Smith said he became closer with both Alfonso and Longworth. He described spending time with them socially, including going on bike rides, and said both men occasionally supported him financially. He characterized Longworth as gentle and kind, stating, “He wouldn’t hurt a fly.”

Yostin Andres Mosquera admitted the manslaughter of Alfonso

Smith later met Mosquera through Alfonso, who described Mosquera as a young Colombian man staying with them while attending Ealing College. Alfonso reportedly claimed he was covering Mosquera’s travel and tuition expenses. Smith testified that Mosquera told him he had a wife and child in Colombia and was “just doing it for the money.” Smith responded, “Great — so was I.”

According to Smith, the three engaged in a sex session together the week before the killings. He described the relationship between Alfonso and Mosquera as positive, with no apparent tension or conflict. “He seemed fun. I didn’t see anything that seemed like they disliked each other,” Smith said.

Forensic officers at an address in Shepherd's Bush, west London, after human remains were found in Bristol

Reflecting on the last time he saw Alfonso and Longworth, Smith recalled a farewell embrace from both men on a Friday evening. “Albert gave me a hug, Paul gave me a hug, and that was the last I heard of those two,” he told the court.

The trial is ongoing as the court continues to examine the evidence and circumstances surrounding the deaths of Alfonso and Longworth.