Detective Rorschach entered a restaurant. He was about to sit on the seat, he hears a voice coming from the room top of the restaurant "No Peter, Don't shoot".
Just after that, he hears a falling down of a person. Rorschach rushed to the rooftop where he finds women lying dead on the floor and there were three people.
Three people are very close to the dead body and the gun was in close proximity of all of them.
These three people were "A cricketers" , "A football player" and a "Tennis players".
Rorschach shoots the tennis player. Why ?