Auto-translated
And I don't understand what's so difficult about writing: *a watch was found not far from the murder scene*. You could even write that it was found on the roof. Besides, one of the Mafia members was already a killer with a sniper rifle, who left clues, and there was nothing complicated about that. So, let's not insult each other without considering all the options. Although, you're probably trying to portray someone as a mercenary who might be partially useful to the city.