Man Convicted of Killing Acton Swimming Coach
Former porn actor brutally murdered couple who had given him a home
L to R: Yostin Mosquera, Albert Alfonso and Paul Longworth. Picture: Facebook
July 21, 2025
A man has been found guilty of the brutal murder of a couple in Shepherd’s Bush, whose dismembered remains were later discovered in a pair of suitcases dumped at Clifton Suspension Bridge in Bristol.
Yostin Andres Mosquera, 35, a Columbian national of Scotts Road, was convicted at Woolwich Crown Court of murdering Albert Alfonso, 62, and Paul Longworth, 71, at their home on 8 July 2024. The two men were in a civil partnership, with Mr Alfonso working as a swimming coach at the Mode Club on Bromyard Avenue in Acton.
Mosquera and Mr Alfonso are believed to have first made contact through the internet. Alfonso had posted images of himself being dominated by other men on online porn sites. Mosquera had worked in the industry since 2017 and was invited to stay with the couple. Although, Alfonso paid Mosquera for sex, Paul Longworth, who was a retired handyman, was aware of the nature of the relationship and had made no objection.
In June 2024, Mosquera came to stay with the couple and Mr Alfonso got him guest membership of the Mode Club and signed him up to play five-a-side football in the area.
On the day of the killings, Mr Alfonso had left home early to take up his regular shift. While he was out, Mosquera launched a violent and fatal attack on Mr Longworth, bludgeoning him with a hammer inside the couple’s flat and hid the body. When Mr Alfonso returned that evening, they engaged in sex during which Mosquera cut the throat of his second victim with a knife with the act being caught on camera. The video, which was played to the jury at the trial, shows Mosquera naked, singing and dancing by the body of Mr Alfonso, which was still twitching, and then walking over to his computer to access his financial details.. The court heard that he sustained more than 30 knife wounds.
After the murders, Mosquera remained in the flat for at least two days with the victims’ bodies. During that time, he purchased a chest freezer and cleaning products, and conducted internet searches about decomposition and how long bodies take to freeze. He also attempted to access the couple’s bank accounts, transferring £4,000 to an account in Colombia.
Police cordon off a block of flats on Scotts Road in Shepherd's Bush. Picture: Sky News
On 10 July, he hired a van and drove to Bristol. That night, a passer-by saw him hauling two large, bloodstained suitcases onto the Clifton Suspension Bridge and called the police. Mosquera fled the scene, but officers later tracked him to a hotel in central London.
Inside the suitcases were body parts belonging to the two men. Police were able to identify Mosquera through an address label found on one of the cases, which led them back to the couple’s home on Scotts Road. A search of the property uncovered the rest of the remains, including both victims’ heads, in the recently purchased freezer. The murder weapons were also recovered.
. Detectives believe Mosquera exploited the couple’s kindness, having been taken in as a guest, before launching a planned and devastating assault to gain control of their flat and finances.
Detective Chief Inspector Ollie Stride, who led the investigation, said, “This was a harrowing and callous attack on two men who had allowed Mosquera into their home. The level of violence he used was truly horrific and his actions afterwards – attempting to cover his tracks, dispose of their bodies, and defraud them – demonstrate his complete disregard for human life.
“This has been an incredibly complex and distressing case, not only for the victims’ loved ones but also for the officers and staff involved. I would like to thank the community, particularly those in Shepherd’s Bush and Acton, for their support and the witnesses who came forward. Their evidence played a vital part in securing this conviction.”
Yostin Mosquera eating fish and chips in a pub in Chiswick. Picture: Facebook
The case had a profound impact in the local community, where both men were active and well-liked. Mr Alfonso’s colleagues at the gym described him as a kind and patient coach, and his sudden absence in July last year prompted immediate concern.
Mosquera denied the murders, claiming that Mr Alfonso had killed Mr Longworth and that he had only acted in self-defence, but the jury unanimously rejected this version of events.
He is due to be sentenced in October.
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