sad chapter in a story that began a year and a half ago. warmbier came here on a private sight seeing tour. after a night out on the town to celebrate new year's eve, the university of virginia student was accused of trying to steal a propaganda banner from the wall of his hotel. for that, he got a 15-year sentence. soon after, mysteriously, he ended up with a brain injury. >> in north korea, otto warmbier has been released. let's go straight to our will ripley. >> this was one of the hardest reports i've ever had to give. i had spoken just weeks earlier with warmbier's parents. at the time, they had no idea about their son's condition. >> but this reunion is not the happy reunion his family had been hoping for as recently as a week ago because that is when they learned according to a family statement that otto warmbier has been in a coma