Fifteen federal courts that handle immigration cases have been shut down by the Justice Department due to protests and violence in major U.S. cities.

The DOJ’s Executive Office for Immigration Review announced immigration courts in Chicago, Cleveland, Houston, Philadelphia, and Portland would be closed Tuesday due to “civil unrest” following daytime protests and overnight violence in those cities. Courts in Louisville and near San Diego, California, were also closed Tuesday, with no reason cited on the courts’ websites.