On Monday, police arrested 26-year-old Luigi Mangione and charged him in the murder of UnitedHealthcare CEO Brian Thompson. Mangione's five-day run from authorities ended after he was spotted eating at a McDonald's in Altoona, Pennsylvania, about 300 miles from Manhattan, where Thompson was gunned down on the morning of December 4. Authorities say they found Mangione carrying fake IDs and a 3D-printed "ghost gun," the model of which is known as the FMDA, or "Free Men Don't Ask." Meanwhile, a flood of mysterious drone sightings across New Jersey and neighboring states caused so much havoc, it quickly gained federal attention. While many people wondered why the US military couldn't just shoot down the drones, the FBI, Department of Homeland Security, and independent experts say the drone mystery may not be much of a mystery, and the drones are probably mostly just airplanes. As for more terrestrial threats, we dove into the far-right realm of "Active Clubs," small groups of young, fitness-focused men who are steeped in extremist ideology and linked to several violent attacks. While the man who helped invent the Active Club network, Robert Rundo, was sentenced in federal court this week, Active Clubs around the world are proliferating.

Luigi Mangione, the man suspected of killing the chief executive of UnitedHealthcare, underwent surgery and was reported missing in San Francisco before the shooting. Brian Thompson, 50, CEO of the healthcare insurance giant, was gunned down last week in Midtown Manhattan, spawning a five-day manhunt that eventually led to Mangione's arrest at a McDonald's restaurant in Altoona, Pa. Questions about Mangione's alleged motives and background have swirled in the media since his arrest Monday. As prosecutors worked to bring him to New York to face charges, new details emerged about his life and his capture. The 26-year-old Ivy League graduate from a prominent Maryland real estate family was charged with murder hours after his arrest.

During an address Thursday, President Joe Biden claimed he taught "political theory" at the University of Pennsylvania. An Altoona, Pennsylvania man has been arrested after allegedly having a sexual relationship with a teenage girl he met on the popular dating app, Tinder, according to reports. An NBC station out of Johnstown-Altoona, Pennsylvania reported that state police spoke with the 14-year-old girl on Sept. 19. During the conversation, the girl reportedly told police she met Steven Ellis, 32, on Tinder after creating a profile that made her appear older. In court documents, police said they learned the teenager and Ellis sent each other explicit messages and photos.