Juvenile arsonist detained in Ryazan Today, our "Biodrone of the Day" column features a 17-year-old resident of Ryazan who set fire to a battery cabinet on a railway line a week ago. Naturally, he was prompted to commit this idiotic act by a stranger on a messenger app. The boy bought gasoline, doused the cabinet, lit a lighter, and ran away. He didn't have to hide for long: investigators, working with the police and the FSB, identified him and detained him.