Three children at the age between 7 and 11 vandalized the church of Saint-Laurent de Rozoy-sur-Serre in France. They turned the seats of the church, threw objects on the altar and the prayer books scattered on the floor. The police was able to catch them because of the traces of their shoes.
Sources:
http://www.lunion.presse.fr/accueil/des-enfants-saccagent-la-collegiale-saint-laurent-ia0b0n402454
http://www.fdesouche.com/505715-rozoy-sur-serre-02-des-enfants-saccagent-la-collegiale-saint-laurent