In my world, there is a government agency that stops crimes before they happen, kind of like in Minority Report. However, in this case, they swoop in as early as possible, sometimes waiting outside the door as they were born. Because of this, they can't prove they stopped them because they were in the middle of shooting someone. How this agency gets it'sits intel is from a (basically) all-knowing future seeing-seeing AI that just gives them a name and image of the person, and place and time to arrest the would be-be criminal. The AI is limited by it'sits programming so that the only intervention it can do is giving said information to the government agency.
Since there is no proof besides 'AI said so', how does this agency prove that the people they arrest would be criminals?