The body of a Nigerian man, named Isaiah Olugosi, was found on Monday, March 28 in his cell at HMP Wormwood Scrubs in West London.
The 38 years old deceased who was convicted for fraud was awaiting sentence when he was found dead.
Olugosi pleaded guilty in May 2021, to masterminding a scam that defrauded over 100 shops in the UK in a two year reign of theft.
His wife Holly, and members of his organised crime group exploited over 30 teenage victims and were charged with modern slavery laws.
The victims aged between 14 and 17 were discovered by police when they unearthed the extent of the fraud in 2020.
While in court he revealed that girls were recruited via social media and approached on the street, with some living in foster homes while others had gone missing.
At Snaresbrook Crown Court, Olugosi admitted conspiracy to arrange or facilitate the travel of children for exploitation, two counts of conspiracy to defraud, money laundering and possession of articles for use in fraud.
Money made from his scam was used to fund his expensive lifestyle, where huge sums were spent on cosmetic surgery, tanning sessions, a new Mercedes, luxury holidays and even a fridge they bought for £2,500.
The team leaders would trick or coerce the girls into joining their criminal gang, before Olugosi and his drivers transported them across the UK using pre-planned routes to target branches of each store.
They printed out and put fake barcodes on items to pay a cheaper price before later returning for a full price refund, meaning a phone bought for £20 could get a £120 refund.
The girls would often go missing for several days, committing fraud during the day and staying in hotels at night.
In the early part of the conspiracy, Isaiah Olugosi personally drove the victims around, telling them what goods to get, which fraud technique to use and which branches to target.
On a typical day for Olugosi’s gang, they would defraud over 10 stores, making thousands of pounds per route for the gang.
The stolen funds were then laundered through at least one hundred UK bank accounts set up by Isaiah Olugosi, who used addresses of adults known to have mental health problems or severe learning difficulties to evade authorities
A Prison Service spokesperson said: ‘HMP Wormwood Scrubs prisoner Isaiah Olugosi died in his cell on March 28.
‘The Prisons and Probation Ombudsman has been informed.’