Luigi Mangione, a man charged in the killing of UnitedHealthcare CEO Brian Thompson, had a spiral notebook among his possessions that laid out plans for the shooting, according to The New York Times.

Investigators are currently looking at pages of notes the 26-year-old allegedly scrawled in a spiral notebook before he allegedly gunned down UnitedHealthcare’s CEO Brian Thompson last week ...

For me, notebooks are a lifeline. I'm a writer who dreads writing (that's how you know I'm committed), and putting pen to paper has dulled much of the pain that comes from exposing my inner world.

Luigi Mangione, a man charged in the killing of UnitedHealthcare CEO Brian Thompson, had a spiral notebook among his possessions that laid out plans for the shooting, according to The New York Times.