Robert Crimo III, the Illinois man accused of opening fire at a 2022 Independence Day parade in Highland Park, pleaded guilty on March 3.

With the guilty plea, the trial was immediately called off. The jury was dismissed. The judge confirmed that Robert Crimo had voluntarily waived his right to a trial and accepted responsibility for all 69 counts, which included 21 counts of first-degree murder and 48 counts of attempted murder.

Upon changing his plea to guilty Monday, the Highland Park parade shooter signed "Donald Trump" rather than his own name on a trial waiver document, CBS News Chicago has confirmed. The document acknowledges that a defendant has given up his right to a trial upon pleading guilty.

Minutes before opening statements were set to begin in his murder trial yesterday, Robert Crimo III pleaded guilty to opening fire on spectators at the 2022 Highland Park Fourth of July parade and killing seven people.