State prosecutors alleged in Wednesday's court filing that Luigi Mangione wrote in his diary about plans to kill United Health Care CEO Brian Thompson.

The court application noted that Mangione, a 27-year-old, pleaded not guilty to state and federal charges linked to the December murder, allegedly using a red notebook as a diary to record his plan to kill Thompson. Authorities seized notebooks during Mangione's arrest in Pennsylvania after a five-day hunt for Thompson's killer.

"So, say you want to fight against the deadly, greedy health insurance cartel. Are you bombing the headquarters? Bomb = terrorism." "A such action seems to be the anger of a simple sick/bad luck person and frustrated in the insurance industry while recklessly endangering countless employees."

Prosecutors claimed that instead of bombing, there should be someone who should “become CEO of SIC” at the annual parasitic bean party convention.

"It is targeted, precise and does not risk the innocent. On top of that, it is self-evident." "This is in the news headline's insurance CEO was killed at the annual investor meeting."

When filing a court application, state prosecutors sought to justify the terrorism enhancement that plus Mangeny’s first-degree murder charges were justified. Last month, Mangione's attorney filed a motion to dismiss New York State murder charges against him.

"If there is a publicly closed case that points to the defendant's guilt, it's the case," Manhattan Assistant District Attorney Joel Seidemann wrote in the filing. "In short, it's hard to find a case with guilt about the identity of the murderer and the nature of the assassination."

"Brian Thompson and UHC are just symbols of the healthcare industry and are symbols of the cartels that the defendants consider deadly to be fatal greedy," Seidman added in the document.

Mangione's attorney did not immediately return the request for comment.

Thompson, 50, was fatally shot dead in December at a masked gunman outside the Hilton Hotel in New York, Midtown Manhattan after he was preparing to speak at an investor conference at the UnitedHealth Group.

The shooter fled Central Park on his bicycle, escaping the authorities' captives.

Five days later, a McDonald's worker in Altoona, Pennsylvania called police and said they believed a masked man matched the image authorities released by the gunman. Authorities say the masked man at McDonald's is Mangione.

Thompson's death sparked protests, but it also sparked a wider national conversation about the high cost of health care in the United States.

Mangione regularly protested against the health care industry at state and federal hearings in New York City, with a group of people gathering outside the court to call for Mangione's release.

The Mangion Legal Defense Fund has exceeded $1 million in the weeks after Attorney General Pam Bondi directed federal prosecutors to seek death penalty for the 27-year-old.

Next, Mangione will appear in court on June 26, demanding his state charges.