Luigi Mangione's alleged diary entries released in new court filing

Luigi Mangione wrote about plans to kill UnitedHealthcare CEO Brian Thompson in his diary months before the healthcare executive was gunned down in New York City last year, state prosecutors alleged in a Wednesday court filing.

Luigi Mangione wrote about plans to kill UnitedHealthcare CEO Brian Thompson in his diary months before the healthcare executive was gunned down in New York City last year, state prosecutors alleged in a Wednesday court filing.

Mangione, a 27-year-old who has pleaded not guilty to state and federal charges in connection with the December murder, allegedly used a red notebook as a diary to document his plans to kill Thompson, the court filing states. The notebook was confiscated by authorities during Mangione's arrest in Pennsylvania after a five-day manhunt for Thompson's killer.

"So say you want to rebel against the deadly, greed fueled health insurance cartel. Do you bomb the HQ? No. Bombs=terrorism," Mangione allegedly wrote in August 2024, the state court filing states. "Such actions appear the unjustified anger of someone who simply got sick/had bad luck and took their frustration out on the insurance industry, while recklessly endangering countless employees."

Instead of carrying out a bombing, prosecutors allege, Mangione wrote in an entry last October that someone should "wack [sic] the CEO at the annual parasitic bean-counter convention."

"It's targeted, precise, and doesn't risk innocents. Most importantly, the point is self-evident," the diary entry reads, according to the filing. "The point is made in the news headline 'Insurance CEO killed at annual investors conference.'"