Chilling new developments in the assassination of Charlie Kirk, Matt Gutman reports on law enforcement sources saying accused assassin Tyler Robinson allegedly tracked Kirk's schedule for days, and the new details from the FBI about DNA evidence allegedly linking Robinson to the murder; Pierre Thomas one-on-one with Attorney General Pam Bondion threat to crackdown on what the administration calls left wing terror; Jon Karl with the dramatic deadly strike on a Venezuelan boat President Trump claims was smuggling drugs into the U.S.; Trevor Ault has details on the two suspects authorities say tried to detonate a bomb they placed under a news van in Salt Lake City, Utah; and more on tonight's broadcast of World News Tonight with David Muir.

Whit Johnson has the latest on the multiple officers who were shot, at least three fatally, while serving a warrant in York County, Pennsylvania; Mary Bruce reports on the Federal Reserve lowering interest rates for the first time this year as Pres. Trump receives the royal treatment during his U.K. trip, with thousands in London protesting his visit; Aaron Katersky has details on the suspect charged in Charlie Kirk's murder, the sheriff saying he was "fearful of being shot by law enforcement;" and more on tonight's broadcast of World News Tonight with David Muir.