Luigi Mangione has watched surveillance videos of the killing of UnitedHealthcare CEO Brian Thompson at a court appearance.

Mangione has pleaded not guilty to state and federal murder charges over the killing of Mr Thompson. The state charges carry the possibility of life in prison, while federal prosecutors are seeking the death penalty.

The 27-year-old's lawyers are seeking to bar evidence, including a 9mm handgun and a notebook in which prosecutors say he described his intent to "wack" a health insurance executive, from his New York state trial.

Both were allegedly found in a backpack Mangione had with him when he was arrested.

Mr Thompson, 50, was shot dead on 4 December last year as he walked to a New York City hotel for his company's annual investor conference, sparking a fiv

See Full Page