A 13-year-old boy saved his little sister from attempted kidnapping, using a simple but “devilishly” effective weapon: his slingshot.

His 8-year-old sister was picking mushrooms in the back of their house last Wednesday in Alpina, Michigan, in the Great Lakes region, when an unknown man came out of the bushes and grabbed her, local police said in a statement, reported by French Agency.

The little girl fought and managed to escape from the hands of the would-be kidnapper. Then, her 13-year-old brother, seeing his sister in danger, stretched his slingshot, marked and hit the stranger who went to kidnap his sister on the head and chest.

The perpetrator then fled, leaving the little girl behind.

With… the description of the incident by the 13-year-old boy, police “combed” the neighborhood and they ended up arresting a suspect who had “injuries consistent with sling shots to the head and chest,” according to police.

The alleged perpetrator, 17 years old, charged with attempted kidnapping of a minor and will be tried as an adult.