The FBI is seeking a ‘person of interest' in the shooting death of prominent conservative activist Charlie Kirk. Investigators revealed they have recovered the weapon used in the crime. President Trump called Charlie Kirk a "giant of his generation" and said he has "an indication" of the shooter's motive. NBC News has learned there are a growing number of threats against high-profile political figures. NBC News' Gabe Gutierrez reports. NBC News' Morgan Chesky reports. Officials say 16-year-old Desmond Holly was radicalized by an extremist network and died by a self-inflicted gunshot wound after opening fire on students at Evergreen High School in Colorado. Two students remain in critical condition. Authorities say the shooter may have been radicalized by some extremist network. NBC News' Dana Griffin reports. Bloomberg News obtained 18,000 of Jeffrey Epstein's personal emails, which reveal a closer relationship with Ghislaine Maxwell than either publicly acknowledged. According to the emails, Epstein and Maxwell even planned to undergo a fertility treatment together. NBC News' Hallie Jackson reports. Ryan Routh is representing himself in his criminal trial for allegedly plotting to assassinate President Trump at his Florida golf club. During the first day of testimony, the former Secret Service agent who spotted and confronted Routh shared his account of that day, revealing Routh was only one hole away from where Mr. Trump was golfing. NBC News' Jesse Kirsch reports. On the 24th anniversary of September 11th, memorial services were held in New York, D.C. and Pennsylvania to honor the lives lost. In New York, three children of different firefighters who responded on 9/11 decided to become firefighters after losing their fathers that day. NBC News' Sam Brock has the story. In our series "The Cost of Denial," NBC News' Maggie Vespa reported on brothers Noah and Hunter. Both have Duchenne Muscular Dystrophy, a rare genetic disorder that progressively attacks a person's muscles. Noah was approved for an expensive gene therapy that can help, but Hunter was denied. Soon after our initial story aired, the family received word of a major update. 

People in multiple fields have been removed from their jobs after comments about the assassination of conservative activist Charlie Kirk in social media posts. NBC News' Steve Patterson has more. The wife of conservative activist Charlie Kirk said Friday that her husband was a good man who wanted to be remembered for his courage and faith and vowed that his movement will continue after he was shot and killed during an appearance at Utah Valley University. NBC News' Morgan Chesky has more. The family of an undocumented immigrant killed by an ICE officer after allegedly fleeing a traffic stop is speaking out. It comes as another U.S. city prepares for federal troops to arrive. NBC News' Maggie Vespa reports. Tens of thousands of people descended on Britain's capital on Saturday in what is believed to be the country's largest far-right rally in decades, organized by anti-immigration activist Tommy Robinson. NBC News' Raf Sanchez reports. Tens of thousands of people descended on Britain's capital on Saturday in what is believed to be the country's largest far-right rally in decades, organized by anti-immigration activist Tommy Robinson. NBC News' Raf Sanchez reports. Retired CIA agent Ann Butler is a wife and a mother of five, and for many years her family was unaware of her life as an undercover spy for the U.S. government. NBC News' Kelly O'Donnell has the story. After more than a year in St. Louis Children's Hospital, 9-year-old Dash Burr got the ultimate birthday gift when he received a new heart, a surprise parade from the hospital's staff, and a special message from Iowa State football quarterback Rocco Becht. NBC News' Jose Diaz-Balart has that story and more in this week's Good News Wrap-Up.