Three boys were arrested and charged with attempting to sexually assault a 12-year-old girl in a Brooklyn middle school, police said.

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The incident occurred on Oct. 6 inside Mott Hall IV Middle School in Bedford–Stuyvesant, but police did not have more specifics about what occurred. They said it was reported on Oct. 7 by the principal.

Two of the boys are 12 and one is 14, cops said. Two were arrested on Oct. 7 and the third was arrested Oct. 10, they said.