I'm not going to try to explain legal process in Brazil but, you know, I'm beginning to come around to the idea that all this byzantine kafuffle - Federal Police, public prosecutor, courts-martial, even a congressional enquiry - is not a bad thing. Other than that it takes up a hell of a lot of time and money which could be more usefully spent elsewhere.
What it IS doing is showing up the anachronistic tensions in the "system", i.e. military ATC control with a mixed military/civilian staff, lack of investment, the culture of ass-covering and avoiding blame, lack of planning and lack of leadership, for precisely what it is. On prime time.
In the meantime, the real accident investigation goes on and, I think/hope, unemotionally, conducted by professionals who shun the limelight and the reporters, and who will eventually probably reach a conclusion based on facts - and which many on here have already arrived at empirically.
As ATC Watcher rightly cautions, there is no trial underway. And yes, there are heavy political aspects, basically those of pointing the finger at who misspent the money in the past and who gets to control the money in future.
So, please consider all this "trial" business as static.