North Korea’s prison camps: What put Otto Warmbier into a coma?

The brutality of the North Korean regime was once again cast into the international spotlight following the death of 22-year-old American student Otto Warmbier last week.

While the brutal conditions inside North Korea’s prison camps and detention centres are well documented, less is known about how the American came to be in a coma in the first place.

However a 2012 video could provide some clue as to how North Korea treats its detainees and prisoners.

Related: Professor who criticized Otto Warmbier gets canned