Cesar Sayoc, who is accused of mailing explosive devices to prominent Democrats and other critics of President Donald Trump, pleaded not guilty on Thursday in a federal court in Manhattan to a 30-count indictment that includes five charges of using a weapon of mass destruction.

Sayoc, 56, is accused of mailing 16 explosive devices in the days leading up to the midterm elections from Florida to the Westchester County residences of former Secretary of State Hillary Clinton and billionaire philanthropist George Soros.