Luigi Mangione deliberate the homicide of UnitedHealthcare CEO Brian Thompson months prematurely … and, he’d clearly been fascinated with it longer — so say federal prosecutors.

Within the federal prison grievance — filed Thursday — prosecutors included a number of diary entries they declare Mangione revamped the previous few months … all of which appear to level to Mangione as Thompson’s killer.

An entry dated August 15 describes how he is “glad — in a manner — that I’ve procrastinated” as a result of it allowed him to study extra a few “Firm-1” … which is how the feds seek advice from UnitedHealthcare all through the docs.

The large takeaway right here … this diary entry signifies Mangione allegedly cooked up this killing lengthy earlier than August — therefore his use of the phrase “procrastinated.”

Additionally within the August 14 entry, prosecutors say Mangione wrote, “the goal is insurance coverage” as a result of it “checks each field.”

So, it would not seem to be Mangione had a selected gripe simply with the insurance coverage business, however company greed, basically … and, concentrating on an insurance coverage exec finest served his functions, symbolically.

The subsequent diary entry included within the docs — dated October 22 — says “1.5 months. This investor convention is a real windfall … and — most significantly — the message turns into self-evident.”

About 6 weeks later, Thompson was killed in Manhattan as he entered the UHC investor convention.

In response to feds, Mangione wrote that he deliberate to “wack” a CEO on the convention — although the entry would not determine Thompson by identify.

Moreover, federal prosecutors reference a letter recovered from Mangione throughout his arrest that was “addressed ‘To The Feds'” … they declare it states he was working alone — and feds may confirm it by checking related serial numbers to “confirm that is all self-funded.”

As we instructed you … federal prosecutors filed the grievance Thursday — on the identical day Luigi was extradited from Pennsylvania again to NYC. These expenses are tacked on prime of the 3 state homicide expenses the Manhattan D.A.’s thrown on the Ivy League grad.

Mangione faces 4 federal expenses — homicide by use of a firearm, 2 stalking expenses and a firearms offense.