A conservative online journalist’s arrest has prompted a broad federal investigation into the Portland Police Bureau. The U.S. Department of Justice says it will examine the bureau’s practices and actions following Thursday’s high-profile incident.

The Department of Justice is investigating the arrest of conservative influencer Nick Sortor during an antifa protest in Portland. Sortor had been documenting unrest across the city for weeks before local authorities detained him, prompting the attorney general to demand a closer look at policing practices. The move signals growing federal interest in how civil liberties are handled amid ongoing demonstrations.