These transmissions were crucial to the investigation!
The fact that the man admitted to have committed this crime saved us not only time and resources to further investigate the matter, but possibly saved the lives of more soldiers that could have been killed by a civilian in disguise.
As for your second question, in any matter between the Liberty authorities and a civilian it is always considered sensitive information. What if it had turned out that the man in question was innocent? That information can't be leaked to external parties, it could potentially damage his reputation. These are written in our protocol procedures and we are always supposed to follow them to the letter."