"Đinđić's close associates refused polygraph test"

of course he denied to be tested - a lot of dirty deals from that period can go to the surface.....and open the eyes to the people what was really happened 10 or 15 years ago.

As far as I know, only the US and Canada are using lie detectors.
Polygraphs are scientifically very questionable.
Have a look at Wikipedia: http://en.wikipedia.org/wiki/Lie_detector
"Polygraphy has little evidence to support its use.[9][10][11] Despite claims of 90% validity by polygraph advocates,[12] the National Research Council has found no evidence of effectiveness... Even using the high estimates of polygraph's accuracy a significant number of subjects will appear to be lying, and would unfairly suffer the consequences of "failing" the polygraph."

As far as I know, only the US and Canada are using lie detectors.
Polygraphs are scientifically very questionable.
Have a look at Wikipedia: http://en.wikipedia.org/wiki/Lie_detector
"Polygraphy has little evidence to support its use.[9][10][11] Despite claims of 90% validity by polygraph advocates,[12] the National Research Council has found no evidence of effectiveness... Even using the high estimates of polygraph's accuracy a significant number of subjects will appear to be lying, and would unfairly suffer the consequences of "failing" the polygraph."

of course he denied to be tested - a lot of dirty deals from that period can go to the surface.....and open the eyes to the people what was really happened 10 or 15 years ago.