Luigi Mangione, the man accused of fatally shooting United Healthcare CEO Brian Thompson in a case that sparked national attention, watched as new testimony and never-before-seen footage from the day of his arrest in a McDonald’s was unveiled during a hearing this week.

Mr Mangione has pleaded not guilty to state charges related to the 2024 murder of Mr Thompson, a father of two, as well as federal counts that carry the possibility of the death penalty.

The pre-trial hearing is focused on the defence’s attempts to keep certain evidence out of the trial, which has not been scheduled yet, including items found in his backpack during his arrest and statements he made to officers.

During the first two weeks of the hearing, supporters of Mr Mangione – the scion of a prominent Maryland family and Ivy League graduate – filled the back rows of the Manhattan criminal courtroom, some wearing a pin portraying him as a saint-like figure.

Prosecutors and Mr Mangione’s legal team are expected to question over a dozen witnesses from the day of his arrest, including the employees who spotted him and the police who arrested him.

Here is a look at some of the key pieces of evidence discussed that offer a window into Mr Mangione’s trial.

The pre-trial hearing has centred on the small-town McDonald’s in Altoona, Pennsylvania, where officers were shocked to find the high-profile suspect days after Mr Thompson was fatally shot – and hours from the busy Midtown Manhattan crime scene.

Witnesses suggested the arrest may never have occurred there if not for one of Mr Mangione’s key features: his eyebrows.

During the first day of the hearing, prosecutors played a call to police from a McDonald’s employee about a tip from a customer in the restaurant.

The employee said the customer thought a patron looked like the suspect in the United Healthcare CEO shooting. The patron was well covered, wearing a black hoodie, a medical mask and a tan beanie. But one key detail stuck out.

“The only thing you can see is his eyebrows,” the employee told police.

It was not the only time Mr Mangione’s distinguished eyebrows have come up.

Prosecutors also entered into evidence notecards they say Mr Mangione had, which appeared to be to-do lists for the days after the high-profile shooting.

One card reads: “Keep momentum, FBI slower overnight,” while another said: “Change hat, shoes, pluck eyebrows”.

Dozens of videos released by prosecutors show Mr Mangione’s encounter with police and his eventual arrest in the McDonald’s as other customers watched.

Officers who responded narrated the footage this week, telling the court what was going through their minds as they realised the 27-year-old appeared similar to the suspect in photos.

On Thursday, Altoona Lieutenant William Hanelly said a fellow officer responded sarcastically that he would “get right on it” when he heard the tip about the suspect.

Mr Hanelly told the court that he understood the sarcasm, because it seemed “preposterous” that a shooter from “New York City had found his way to a McDonald’s in Altoona, Pennsylvania”.

But at the scene, officers said they quickly saw the resemblance to New York Police Department pictures circulated to the public after days without any leads.

“It’s him. I’m not kidding. He’s real nervous. It’s him,” one officer can be heard telling Mr Hanelly in a phone call played for the court.

In one video, Mr Mangione eats a McDonald’s meal as officers stand guard around him in the restaurant waiting for more officers to arrive.

At the hearing, Mr Mangione watched the videos quietly from the defence table, seated next to his lawyers – wife and husband Karen Friedman Agnifilo and Marc Agnifilo. The latter defended Sean “Diddy” Combs, who was acquitted of sex trafficking and racketeering charges just months earlier.

Wearing a grey suit and button-down shirt most days, Mr Mangione frequently took notes on a legal pad, and occasionally smiled and laughed with his lawyers.

In the series of police body camera videos played for the court, Mr Mangione’s interactions with officers eventually lead to his arrest on 9 December as Christmas music plays loudly in the background of the McDonald’s.

When officers first speak to Mr Mangione, they ask him to pull his mask down. He listens, and is heard telling officers his name is “Mark Rosario”, handing them a New Jersey identification that police later said was false.

That identification gave officers enough cause to arrest Mr Mangione, Mr Hanelly told the court, and in the video, Mr Mangione tells officers his real name is Luigi.

In another body camera video, an officer tells the 27-year-old he is under police investigation for giving a fake identification and Mr Mangione is seen putting his hands on the wall as officers arrest him.

They then take a photo of Mr Mangione with his hands behind his back, an image widely circulated on social media after his arrest.

The pre-trial hearing also shed light on the items Mr Mangione was carrying when he was arrested.

Mr Mangione’s lawyers have argued that a 9mm handgun as well as a notebook should be excluded from trial because officers did not have a warrant to search his backpack. Prosecutors allege that Mr Mangione wrote in his notebook about “the deadly, greed-fuelled health insurance cartel”.

During the hearing on Thursday, Mr Hanelly argued that there were exceptions for warrants.

Earlier in the week, Ms Friedman Agnifilo questioned the officer who searched Mr Mangione’s backpack, arguing they were searching the bag “because you thought he was the New York City shooter”.

“No, we search everyone,” said the officer, Christy Wasser.

Video played in court shows a police officer pulling a series of items from the backpack, including a handgun magazine that Mr Hanelly said contained 9 mm bullets – all as Holly Jolly Christmas plays over the speaker.

One law enforcement official comes across a journal in the backpack, and can be heard saying it reads like a “manifesto”.

Ms Agnifilo objected after the “manifesto” part of the video was played repeatedly in court, arguing the prosecutor wanted to emphasise the line.

Eventually, Mr Hanelly testified, the officers decided to stop searching the backpack and take it to the police station because “it was going to be a mess”.

Prosecutors this week entered into evidence images of other items Mr Mangione had with him, including a gun, a silencer, dozens of $100 bills, face masks, a hair trimmer and a passport.

The hearing is expected to continue into next week.