NEW YORK (RTW) — During a recent pretrial hearing for Luigi Mangione, chilling details emerged revealing his attempts to elude law enforcement following the murder of UnitedHealthcare CEO, Brian Thompson. Scrawled notes detailing plans such as 'change hat, shoes, pluck eyebrows,' were discovered in Mangione's backpack, along with a weapon that prosecutors claim is linked to the killing.

Investigators presented these findings on Monday, coinciding with Mangione's ongoing efforts to bar prosecution from utilizing certain evidence sourced during his groundbreaking arrest last December at a Pennsylvania fast-food restaurant.

Unfolding in court was footage capturing his arrest, previously unseen and raising questions about the nature of the search that led to the discovery of the incriminating materials. His legal representatives contend that the authorities lacked a warrant and hence, the evidence should be inadmissible.

The evidence highlights a not-too-distant flight from Manhattan where Thompson was infamously gunned down. Surveillance captured a hooded assailant striking from behind as Thompson traversed toward a corporate investor event. As police strategized their searches, Mangione was promptly identified as a suspect, spurred by tips post-release of surveillance footage.

Among the notes determined to plan a rigorous evasion, mentions of seeking alternative transportation to shift from one city to another were recorded. One note outlines a more time-consuming route to dodge police monitoring, intensely tracking between metropolitan hubs from Pittsburgh to Columbus.

These troubling details provide a glimpse into Mangione's purported mindset and strategies post-crime, as he faces numerous charges — including murder and potentially the death penalty at the federal level. As the pretrial proceedings continue, the potential implications of the evidence could heavily influence the trajectory of this high-stakes case.