Authorities say the Emanuel AME mass murderer's sister was arrested and charged with two counts of bringing weapons on school grounds Wednesday.
Richland County Sheriff Leon Lott said that 18-year-old Morgan Roof was arrested and charged with possession of marijuana, pepper spray and a knife while on school grounds at AC Flora High School in Columbia.
Roof had made a social media post on Snapchat which caused alarm to the student body, police say.
A Richland County Sheriff’s Department School Resource Officer was contacted by a school administrator.
No students were harmed as a result of this incident. Roof has been transported to the Alvin S. Glenn Detention Center.