What in the world was done to his head!?! That hole looks as if it was made by the impact of a violently swung pick. The pattern of his bleed out on the sand is remarkable too. Judging by the photos of Mauro prone, I would say the reports were in error -- he was assassinadoed.
I always feel bad when a teenager is executed like this. He is just getting used to using his dick and masturbating. I'm sure he was no virgin, but he needed a little more experience, especially with the boys, fooling around and playing with each other dicks and asses. I would have allowed him to jerk off one last time and let him really enjoy it. I bet he could shoot a big load.