WASHINGTON ― Federal authorities in Virginia have arrested several individuals in connection with the violence in Charlottesville in August 2017, a U.S. official said Tuesday.

Multiple individuals were in custody as of Tuesday morning, an official told HuffPost. The federal charges against the individuals were still under seal, but they relate to the Aug. 11 march on the campus of the University of Virginia as well as the Aug. 12 Unite the Right rally in downtown Charlottesville.

U.S. Attorney Thomas T. Cullen and FBI Assistant Special Agent in Charge Thomas Chadwick will announce the charges at a press conference in Charlottesville at 2 p.m.

The charges were not directly related to the death of Heather Heyer, who died when a car driven by white supremacist James Alex Fields Jr. slammed into a crowd of protesters demonstrating against racism. Federal authorities announced charges against Fields back in June.

This is a developing story. Please check back for updates.