New details about his December 2024 arrest in Pennsylvania were revealed. A 911 call about a man resembling “the CEO shooter.” Body-camera footage of police arresting Luigi Mangione and pulling items from his backpack, including a gun that prosecutors say matches the one used to kill UnitedHealthcare CEO Brian Thompson, and a notebook they have described as a “manifesto.” Notes about a “survival kit” and “intel checkin,” and testimony about alleged statements behind bars.A three-week pretrial hearing on Mangione’s fight to exclude evidence from his New York murder case ended Thursday after revealing new details about his December 2024 arrest in Altoona, Pennsylvania, steps prosecutors say he took to elude authorities for five days, and what he may have revealed about himself after he was taken into custody.Mangione watched from the defense table as Manhattan prosecutors called 17 witnesses, many of them police officers and other personnel involved in his arrest. Mangione’s lawyers called none. Judge Gregory Carro said he won’t rule until May 18, “but that could change.”Mangione, 27, an Ivy League graduate from a wealthy Maryland family, has pleaded not guilty to state and federal murder charges. The pretrial hearing was in the state case, but his lawyers are trying to exclude evidence from both. Neither trial has been scheduled.