Story highlights Kim Dong-shik said he spied for North Korea before being caught

He was shot by officers in Seoul before he could commit suicide, as instructed

Kim said North Korean agents are still working worldwide for the regime

Seoul (CNN) Looking at the poison pens and torch guns, you would be forgiven for thinking you were on a James Bond set. But these weapons are real and are still part of the arsenal of North Korean spies.

Agents from the most isolated country on Earth are not a thing of the past, said one man who claims his job once was to infiltrate South Korea on missions for the Kim regime.

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Chosen for the job while still in high-school, Kim Dong-shik told CNN he was sent to a specialized university for four years where he learned skills including martial arts, scuba diving, how to shoot and rig explosives. Only years later when he was fully trained was he told why he had been chosen.

"When I was told I was going to be a spy... I felt stunned," Kim said. "There have been many accidents in the past with spies. A lot who were sent to South Korea were killed, so I assumed I'd die."

The physical training was only one part, Kim said; the psychological preparation was key.

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