A teenager has been arrested in connection with threats made against Charlottesville, Virginia's Charlottesville High School.

The unidentified 17-year-old was arrested on Friday, reports NBC News. The suspect allegedly logged into 4chan on Wednesday and instructed white students to stay home because he planned to harm people of color at Charlottesville High School. Investigators refused to share the details of the threat.

The threats caused officials to cancel classes on Thursday and Friday for every school in the Charlottesville City School District, according to Reuters.

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“We would like to acknowledge and condemn the fact that this threat was racially charged,” Charlottesville City Schools said in a letter on Thursday. “The entire staff and school board stand in solidarity with our students of color.”

Charlottesville, Virginia, received international attention after neo-Nazis clashed with counter-protesters at the Unite the Right rally in August 2017. One woman was killed, and several others were injured when white supremacist James Alex Fields Jr. drove his car through a crowd, as Blavity reported.

The teen who is believed to have issued the threats could be charged with felony threats to commit serious bodily harm to persons on school property and misdemeanor harassment by computer.

WTVR reports another boy was arrested on Friday for threatening to commit a school shooting at Albemarle High, a school about two miles away from Charlottesville High School. He was charged with threats of death or bodily injury to a person or member of his family and threats to commit serious bodily harm to persons on school property.

NBC29 reports Albemarle County Public Schools remained open on Friday, but the district boosted police presence on campus as a precaution.

Investigators say the two incidents were unrelated.

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