A former teacher's aide is accused of sexually assaulting a 12 year old boy dozens of times.

34-year-old Rebecca Ann O’Malley of River Falls is charged with first degree sexual assault of a child under the age of 13.

According to the criminal complaint, a former student told investigators he went to her home and had sex with her more than 30 times.

He says it happened when he was in 7th grade at the Harbor Program in River Falls.

The boy told police O’Malley held a gun to his head and threatened his family if he told anyone. We could not reach O’Malley for comment.