MEXICO CITY (Reuters) - Vandals who broke into and wrecked a northern Mexican primary school over the Christmas holidays were thoughtful enough to leave the photocopied mug shot of one of their gang at the scene of the crime.

Mexican television showed a black-and-white print on Tuesday of the squashed, chubby face and hands of a young boy. The photocopy was made at the school in the northern city of Monterrey and left among smashed chairs and torn books.

Headmistress Maria del Rosario Gomez told Televisa news it was the third time the school had been vandalized, and said some of her own pupils were likely to blame.

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