The 24-year-old is said to have been one of four torpedoes sent to London to murder the 36-year-old.
According to prosecutor Louise Attrill, the murder was part of an escalating conflict between two criminal networks, which she described as:
"An eye-to-eye rivalry between two very significant organized criminal networks."
Would "watch Netflix and chill" with a woman
The 24-year-old himself denies the murder and says that he has never heard of the 36-year-old, and claims that he had neither motives nor was paid to murder him.
He explains that he was in London by saying that he would "watch Netflix and chill" with a woman he met online.
They are expected on Friday
The court has concluded that the 24-year-old was guilty of murder.
At the same time, a 35-year-old, also from Sweden, has been found guilty of manslaughter.
Two other Swedes were acquitted in court.
The final verdict, and the sentence, is expected next Friday.