North Korea issued a $2m hospital bill for the care of Otto Warmbier, the American man who died after falling into a coma while in custody in the country.

The bill was handed to Joseph Yun, the former State Department Special Representative for North Korea who went to Pyongyang in June 2017 to bring Warmbier home, sources told CNN.

When he was released, Mr Warmbier was in a comatose state and died a few days later.

He’d fallen into a coma in March 2016 after being sentenced to 15 years in prison with hard labour by the North Korean government for tearing down a propaganda sign in a Pyongyang hotel.

The reason for his comatose state has never been confirmed, though North Korean officials maintain that he was not tortured.