Listen, If a GM doesn't witness the crime, it didn't happen. Welcome to 2238!
It might have happened but we can't always check it and if we just took anyones word
for it, next day it maybe someone who simply doesn't like you to claim that you broke
the rules, or maybe just bend the truth a little bit to make it look worse, and what then?
The game is played by honest people and by some less honest people, but everyone
has to be treated equally.