Soon Ok-lee was imprisoned in North Korea for seven years. 'An officer ordered me to select 50 healthy female prisoners,' she said. 'One of the guards handed me a basket full of soaked cabbage, told me not to eat it but to give it to the 50 women.
I gave the cabbages out and heard a scream from those who had eaten them. They were all screaming and vomiting blood. All who ate the cabbage leaves started violently vomiting blood and screaming with pain. It was hell. In less than 20 minutes they were quite dead.'
Defectors have smuggled out documents that appear to reveal how methodical such chemical experiments were. One stamped 'top secret' and 'transfer letter' is dated February 2002. The name of the victim was Lin Hun-hwa. He was 39. The text reads: 'The above person is transferred from ... camp number 22 for the purpose of human experimentation of liquid gas for chemical weapons.'
[Excerpt of an article by Antony Barnett, The Observer]