A woman who was with Otto Warmbier when he was taken by security in North Korea says she doesn't think the American had done anything that wasn't allowed.

Ria Westergaard Pedersen, a Danish journalist, was on the same tour as Mr Warmbier from December 2015 to January 2016.

He has died after being returned to the US last week in a comatose state after 15 months of captivity in North Korea.

North Korea claims his coma was due to botulism and a sleeping pill, but the Warmbier family and doctors disagree.