An Italian who was jailed for murdering a Metropolitan Police officer and trying to dissolve his body in acid, has died in prison.
A Prison Service spokesman said: "HMP Belmarsh prisoner Stefano Brizzi (dob 26/06/66) died in custody on Sunday 5 February".
Following an Old Bailey trial, the former Morgan Stanley IT developer was found guilty of murder and was sentenced in December to life in prison, with a minimum term of 24 years.
The 50-year-old Breaking Bad obsessive, who was addicted to crystal meth, attempted to dispose of PC Semple's body using an acid bath like that in the US TV series.
Her Majesty's Prison Service (HMPS), however, would only confirm to CBS News that Brizzi had "died in custody" on Sunday and an official investigation was underway.
He was convicted on evidence including chopsticks carrying Semple's DNA, and one of the victim's ribs found in a trashcan in Brizzi's apartment with bite marks that, according to an expert in court, matched the defendant's lower jaw.
Police have said his death is being treated as unexplained.
Neighbors reported a stench coming from Brizzi's flat, however, leading to the discovery of body parts and remains throughout his apartment.
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Brizzi initially told detectives he had been ordered to kill Semple by Satan, before changing his story and claiming he accidentally died during a sex game.
Brizzi and Semple had reportedly met through an online dating app, Grindr.
Pc Semple's long-term partner Gary Meeks reported him missing when he failed to return to their home.
His crimes were said to partly stem from his obsession with the popular USA television show Breaking Bad, in which a character, Jesse (Aaron Paul), tries to dissolve a corpse in a bath of acid.
Brizzi murdered PC Gordon Semple after meeting him on Grindr and inviting the officer to his flat in central London.
They discovered a bath tub full of acid and "globules of flesh".
It is believed he took his own life.