51�Թ�

It's thought it may be hidden deep in secret mines.

He was executed in secret and his family was not given prior warning, Amnesty said.

A small number of broadcasters and non-profit organisations transmit information into the country in the dead of night on short and medium radio waves, so North Koreans can tune in to listen in secret.

Some accounts say Valentine was a priest who continued to perform weddings in secret when they were banned by Emperor Claudius II.

Following the crackdown, some traders have resorted to selling their goods in secret, afraid to display them openly for fear of arrest.