Among the evidence Mangione’s defense team is trying to exclude are the 9-mm. handgun and a notebook in which prosecutors say he described his intent to “wack” a health insurance executive. Both

One year after the shooting of UnitedHealthcare CEO Brian Thompson in Manhattan, his alleged shooter, Luigi Mangione, faces charges of first and second degree murder, criminal possession of a weapon, stalking, forgery, and others.

Alleged gunman Luigi Mangione is back in court Tuesday for a second day of testimony as the judge overseeing his state murder case weighs whether to throw out key evidence.

Mangione's lawyers have argued that items recovered from his backpack, including a 3D-printed handgun and notebook, should not be admissible because police searched the bag without a warrant.

The corrections officer testified during a high-stakes pretrial hearing in the killing of UnitedHealthcare CEO Brian Thompson.