The younger sister of Dylann Roof, the convicted mass murderer who killed nine people at a historic black church in South Carolina, was arrested Wednesday for allegedly bringing weapons to her school on the same day the National Student Walkout was planned.

Morgan Roof, an 18-year-old student of A.C. Flora High School in Columbia, South Carolina, was charged with possession of marijuana and two counts of carrying weapons on school grounds, according to The State newspaper.

An administrator at the school alerted a school resource officer that a student on campus had made a threatening and racist Snapchat post and brought pepper spray and a knife to school. The Richland County Sheriff’s Department later confirmed that the student was Morgan Roof.

Roof’s Snapchat post criticized her schoolmates at Flora High for participating in the nationwide student walkouts in protest of gun violence on Wednesday. The protests were being held on the one-month anniversary of a horrific mass shooting that left 17 dead at Marjory Stoneman Douglas High School in Parkland, Florida.

“I hope it’s a trap and y’all get shot,” Roof wrote of the protest at her school, according to a screenshot of her Snapchat post.

“We know it’s fixing to be nothing but black people walkin out anyway.

This is Morgan Roof, Dylann Roofs little sister, her snapchats there and all do your thang twitter pic.twitter.com/MttSF875is — tatianna (@theonlytyy) March 14, 2018

Roof’s racist post was especially disturbing considering the heinous crimes of her brother, who is an avowed white supremacist.

In June 2015, Dylann Roof walked into the Emanuel African Methodist Episcopal Church in Charleston and opened fire on a Bible study group. He killed nine people. The 22-year-old shooter was found guilty on 33 federal charges and sentenced to death.

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One of Dylann Roof’s friends told investigators that he hoped the massacre would start a race war.

In a letter to students, parents and faculty, Principal Susan Childs said that a student’s social media post caused “quite a disruption” on campus. Childs’ letter did not identify Morgan Roof but described her post as a “hateful message” that was “extremely inappropriate.”

Chris Slick, a neighbor of the Roofs, told The Post and Courier that Morgan Roof wasn’t hateful.

“Tragedy has struck this family again,” Slick told the newspaper.

“This is not the Morgan I knew. She didn’t hate people. She didn’t have prejudices like this — in fact, I witnessed the opposite,” he added. “I hope that one day, one day she finds peace and seeks forgiveness for what she did today. I cannot say I wish the same for her brother.”

In a series of tweets, Gov. Henry McMaster said that “potential tragedy was avoided” at Flora High on Wednesday. He also called on the state General Assembly to pass legislation requiring police officers to be present at every school.

Law enforcement officials took Morgan Roof to the Richland County Detention Center, according to CBS affiliate WLTX 19. She was released on a $5,000 bond with the condition that she not return to school.

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"I'm lost, I'm lost," Lance's grandson, Jon Quil Lance, told the media outlet. He described her as “the heart of the family."

Clementa Pinckney

Clementa Pinckney, 41, was among the nine victims shot and killed by a gunman on June 18, 2015, at the Emanuel African Methodist Episcopal Church in Charleston, South Carolina.



Pinckney was the church's pastor and a state senator representing the 45th District.



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Sharonda Coleman-Singleton

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"The CSU family is praying for ... his family during this painful time," said President Jairy C. Hunter Jr.



Coleman-Singleton, 45, was a high school track coach and a pastor at the Emanuel African Methodist Episcopal Church, according to the church website.

Susie Jackson

Walter Jackson holds a photo of his mother Susie Jackson, one of the nine people killed in Wednesday's shooting at Emanuel AME Church, as he stands on his front porch Friday, June 19, 2015, in Charleston, S.C.

Tywanza Sanders

Lady June Cole, the president of Allen University in Columbia, confirmed to the Atlanta Journal-Constitution that Tywanza Sanders, 26, was one of the victims and said he graduated in 2014 with a degree in business administration.



“He was a quiet, well-known student who was committed to his education,” Cole said. “He presented a warm and helpful spirit as he interacted with his colleagues. Mr. Sanders was participating in the Bible Study session at Mother Emanuel church at the time of the shooting.”

Cynthia Hurd

Kurtis Rogers, communications director of the South Carolina State Library, confirmed to The Huffington Post that 54-year-old Cynthia Hurd, an employee of the Charleston County Public Library, was among the victims.



"We have staff members who have worked with her before on various projects. She had 31 years of service at the library in Charleston," he said.



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Depayne Middleton

Rev. DePayne Middleton-Doctor, 49, was identified as a victim by Charleston County Coroner' Rae H. Wooten.



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Rev. Daniel Simmons, 74, was a ministerial staff member, according to the church website. He was transported to a hospital after the shooting and later died.

Myra Thompson

The Church of the Holy Trinity, via its Facebook page, identified Myra Thompson, 59, as the wife of reverend Anthony Thomspon, Vicar of Holy Trinity Reformed Episcopal Church in Charleston.



"Please pray for all undergoing pain and suffering in this unspeakable crime," said Carl Lund, rector at the church.

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