It was in October last year that the man stabbed a man at Visholmen in Strängnäs. The exposed man suffered life-threatening injuries. According to the judgment, the men already know each other.
The same night, the 20-year-old threatened another man with a knife and he was also affected by cannabis.
The 20-year-old is now sentenced to two years in prison and deportation for serious abuse, serious illegal threats and minor drug offenses.
The man has admitted the drug crime, but denies responsibility for the other crimes.