I’m not sure there is any law under which they can be charged. What happened was essentially a revolution. Arguably, there was no law in existence at the time of the alleged crime. My understanding is that Libya intends to set up a new legal system–unfortunately, one which will be based on Shariah law. I have no idea how Libya views the matter, but I have a real problem with prosecuting someone under a law that took effect after the alleged crime was committed.