The Bodies on the Bridge: Who is Yostin Andres Mosquera?
The Bodies on the BridgeWhen human remains were discovered inside suitcases on Bristol’s Clifton Suspension Bridge in July 2024, Yostin Andres Mosquera quickly became linked to one of the UK’s most disturbing murder investigations. But how did Mosquera know the victims?
What began as an online sexual relationship eventually developed into a friendship involving Albert, his partner Paul Longworth and Mosquera. The three men travelled together, spent time together and appeared to have built a relationship based on familiarity and trust. But sadly, this friendship would end in tragedy.
The Bodies on the Bridge, available now on Crime+Investigation, this article explores the connection between the victims and Yostin Andres Mosquera, the motive behind the murder and what happened after.
Who was Yostin Andres Mosquera?
Mosquera was a Colombian national who worked as a pornographic performer. He had spent more than a decade creating and selling sexual content online and, through that world, encountered Albert Alfonso and his then-partner, Paul Longworth.
The sexual relationship developed into a friendship between the three men, with smiling holiday photos proving evidence of a close bond. Later in the investigation, it was discovered that Albert paid for flights so that Mosquera could visit the UK.
He had stayed with the couple before, and the trio had a strong but unorthodox friendship. This is what made the events of July 2024 even more difficult to comprehend.
From Colombia to London
Mosquera was born in Medellín, Colombia on 8th March 1990. He later became involved in the adult entertainment industry, creating paid content online.
It was through webcam sites that he first met Albert in 2012, who was interested in extreme sexual encounters. Their relationship began online, with Albert paying Mosquera for sexual videos from 2017, before meeting in person.
Mosquera first came to Britain in 2022 after Albert and Paul invited him to stay with them. The couple also travelled to Colombia in 2024, where they spent time with Mosquera before their subsequent deaths.
By June 2024, Mosquera was back in London and staying at the couple’s home in Shepherd’s Bush. On the surface, there was no reason to believe that Mosquera’s visit would end in murder.
His behaviour before the murders
During Mosquera’s trial, it was discovered that Albert Alfonso had made at least 72 payments to the Colombian. Albert also paid for his flights to and from London over the years. The amount totalled over £6,000 according to investigators.
So, money was a big motivator for Mosquera. His search history showed his interest in the value of the couple’s London home, with him regularly searching for its value. Most chillingly, he searched online for ‘where on the head is a knock fatal?’
He also researched serial killers and methods of disposing of bodies.
According to the Crown Prosecution Service, the evidence showed that Mosquera was already looking for a freezer before Paul was killed. Prosecutors argued that this demonstrated planning rather than a sudden loss of control.
However, Mosquera's digital footprint would eventually lead to the murderer’s conviction.
The murder of Paul Longworth
On 8th July 2024, Paul was at home while Albert was working.
Prosecutors said Mosquera attacked the 71-year-old with a hammer, repeatedly striking him on the back of the head. The injuries were fatal. Mosquera then hid Paul's body inside the storage area of a divan bed.
There was an important detail in the prosecution's timeline. Paul had been able to speak to a neighbour from the flat window shortly before he was killed, helping investigators narrow down when the attack took place. Mosquera then waited for Albert to return.
Albert Alfonso’s last moments
Albert came home later that evening. The prosecution said Mosquera killed him during a sexual encounter. Albert was repeatedly stabbed with a knife that Mosquera had concealed nearby. The killing was recorded by cameras Albert had installed in the bedroom. That footage was later recovered by police and became a central piece of evidence at trial.
Afterwards, Mosquera accessed A;bert's computer and mobile phone. Investigators found that he attempted to transfer £4,000 from Albert's bank account into an account in Colombia. He also withdrew money from cashpoints.
Prosecutors argued that these actions helped establish the motive. Rather than being an impulsive attack, they said, Mosquera had killed the couple because he believed he could profit from their deaths.
In October 2025, Mosquera was sentenced to life imprisonment with a minimum term of 40 years. He had previously pleaded guilty to three charges of possessing indecent images of children.
The judge described the murders as “premeditated and thoroughly wicked crimes” and concluded that Mosquera had killed the couple for financial gain.
For more on the cases behind Crime+Investigation's biggest documentaries, sign up to the Crime+Investigation newsletter. Every week, you'll receive the latest articles, episodes and more from C+I delivered straight to your inbox.
