One of the most senior North Korean officials to ever defect, Mr Park has revealed an ugly truth about the regime he served faithfully for decades.
Mr Park, which is not his real name; he wants his identity hidden for fear of retribution against friends and family still in Pyongyang.
His first allegation is shocking. He claims North Korean leader Kim Jong Un ordered his own aunt, a blood relative, to be poisoned.
“On May 5th or 6th of last year,” says Park. “Kim Jong Un ordered his aunt, Kim Kyong Hui to be killed. Only his bodyguard unit, Unit 974, knew this
Kim had Jang, 67, his one-time political mentor described as the second most powerful figure in North Korea, killed on an array of charges, including treason and corruption.
'On May 5th or 6th of last year, Kim Jong-un ordered his aunt, Kim Kyong Hui to be killed,' the defector told CNN.
'Only his bodyguard unit, Unit 974, knew this
In November last year, it was reported Ms Kim, 68, died from a stroke during an impassioned argument about her husband's execution.
She was a close aide to her brother Kim Jong-il for decades, assuming senior positions in the party and becoming a four-star general in 2010.
Korean media reported she committed suicide five days after her husband's execution. But it's now been claimed Ms Kim was murdered after she complained about her husband's death.
