Key figure in Hyundai Motor scandal flees

From the Korea Herald:

The finance director who played a key part in raising slush funds at an affiliate of Hyundai Motor Co. has fled the country. His absence is hindering the investigation of a lobbying scandal involving the nation's largest automaker, the prosecution said yesterday.

You have to start wondering: if this guy's presence is so important, why didn't the government include him in the travel ban it slapped on some of the executives involved in the scandal? Or if he was included: are Korean prosecutors familiar with the concept of confiscating suspects' passports?
One would think that the government would wish to avoid any slip-ups when investigating such a high profile case. But to be fair, the government is run by humans who are prone to make human mistakes. However, humans also usually try to learn from their mistakes and try not to repeat them in the future. The Korean government, on the other hand, obviously has not learned a single thing from past mistakes, since in 2002,

an investigation into illegal political funding by Samsung came unstuck following the sudden departure overseas of one of its employees.

I was laughing and crying after reading this article.
Then a little suspicious. Could someone in the government secretly be on Hyundai's payroll?
I wouldn't be too surprised if it turned out to be true.