Prosecutor: Mariemont student, co-conspirator 'planned to conduct a mass-casualty event' : vimarsana.com

A 14-year-old is charged with conspiracy to commit aggravated murder, accused of a "credible plot" to harm students and staff," according to police and school officials.

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, Mariemont High School Powers , Mariemont Police Department , Hamilton County Prosecutor , Melissa Powers ,