Trevor Ault has the latest in the New Orleans attack investigation as officials search for possible accomplices after a Texas Army veteran rammed a pickup truck into a crowd celebrating New Year's on Bourbon Street, killing at least 15 and injuring dozens; Pierre Thomas reports as the FBI launches a massive investigation into the background of suspect in the New Orleans attack and if he had any ties to the terrorist group ISIS; Mola Lenghi has details after a Tesla Cybertruck exploded outside the entrance to the Trump International Hotel in Las Vegas, with authorities treating it as a possible act of terrorism; and more on tonight's broadcast of World News Tonight.

Mola Lenghi reports on the new details in the Cybertruck explosion investigation, with authorities saying the suspect left behind a note providing clues to a possible motive; In the wake of the deadly truck attack in New Orleans, Trevor Ault reports as the FBI tells law enforcement across the country to be vigilant for possible copycat crimes; Aaron Katersky has details on President-elect Trump's sentencing in his hush money case in New York, with the judge indicating he will sentence Trump to an unconditional discharge; Mary Bruce reports on the Medal of Honor and Medal of Valor recipients awarded during a ceremony at the White House; and more on tonight's broadcast of World News Tonight.