Otto Warmbier's father Fred said last week that his son had been 'brutalised' in North Korea as he spoke at a press conference in Cincinnati (pictured)
Otto Warmbier died in hospital in Cincinnati, Ohio, at 2.20pm on Monday
The 22-year-old was arrested and imprisoned in North Korea in January 2016
He spent nearly 18 months in custody before being released last week
He returned to the US in a coma after being 'brutalised' while in custody
His family announced his death in a statement saying he had 'completed his journey home'