Never-before-seen bodycam footage of Luigi Mangione's arrest confirmed his defense team's claim that police interrogated the accused killer for nearly 20 minutes before reading him his Miranda rights. Prosecutors played the videos - which have not been released to the public - in court this week during pretrial hearings in Mangione's New York state case for the December 2024 murder of UnitedHealthcare CEO Brian Thompson. Mangione's attorneys have requested that any statements their 27-year-old client made to police prior to being informed of his right to remain silent should be struck from his upcoming trial. In one clip shown on Tuesday, December 2, Officer Joseph Detwiler of the Altoona Police Department in Pennsylvania was seen approaching Mangione inside a McDonald's and asking his name. Mangione responded, "Mark Rosario" and handed Detwiler and another patrolman, Tyler Frye, a fake New Jersey driver's license with that name, according to ABC News. "Someone called and said you were suspicious," Detwiler told Mangione in the footage, which he testified on Tuesday was a lie, before repeatedly asking the suspect whether he had been to New York recently. Detwiler then asked Mangione whether he was in Pennsylvania to visit family, to which the Maryland native replied, "Uh, no, I'm homeless." Luigi Mangione Lays Out 6 Reasons to Dismiss Death Penalty Indictment As more police officers arrived on the scene, Detwiler continued questioning Mangione, asking why he seemed "nervous" and warning him against using a potentially fake ID. Ultimately, Mangione conceded in the bodycam video that he "clearly shouldn't have" given a false name and shared his real one. "That was the ID I had in my wallet," he explained. "I had a fake ID." Following Mangione's admission, Altoona Officer Stephen Fox began reading him his rights - approximately 19 minutes after Detwiler and Frye first approached the suspect - and then handcuffed him for falsely identifying himself. The footage proceeded to show the police officers searching Mangione's jacket and backpack, another point of contention for his lawyers, who have argued that law enforcement did not have a warrant at the time and therefore violated more of their client's constitutional rights. Luigi Mangione Reveals He Downloaded Taylor Swift, Charli XCX Songs in Jail Detwiler noted in his testimony on Tuesday that police did not start searching Mangione's backpack - which prosecutors have claimed contained a 3D-printed gun and a notebook describing an intention to "wack" (a misspelling of "whack") a healthcare CEO - until after he had been detained. According to legal website Justia, law enforcement "must provide Miranda warnings prior to engaging in any type of custodial interrogation." However, "if a judge finds that the individual could have walked away from the questioning before the arrest, anything that the individual says can be used against them in court, even though they had not yet received Miranda warnings." Mangione's lead attorney, Karen Friedman Agnifilo, asked Detwiler in court on Tuesday whether he had cornered the Ivy League graduate in McDonald's before detaining him, which the officer denied. "I did not strategically place myself anywhere," Detwiler responded. "I just stood there." Luigi Mangione Prosecutors Accused of Gaining Access to Medical Records If Mangione's lawyers succeed in limiting the evidence that can be used in his state trial, they could undercut the prosecution's case against the alleged murderer, who has also been hit with federal charges for the shooting of Thompson in New York City. "This is a pivotal issue because if the court agrees Luigi was interrogated while effectively in custody before being read his rights, his statements and any evidence that flowed from them could be ruled inadmissible and the prosecution's case would be significantly weakened," NYC criminal defense lawyer Robert Tsigler, who is not involved in Mangione's case, tells Us Weekly. "In a murder prosecution where the gun and alleged manifesto are central pieces of the state's narrative, losing that evidence fundamentally changes the trial landscape and can drive plea negotiations or even force the government to rethink its theory. That said, the defense has an uphill battle here, as judges are hesitant to grant these motions in high‑profile violent cases." Meanwhile, attorney Sanford "Sam" Talkin, who is not involved in the case either, tells Us, "The real import of the pre-Miranda questioning is whether it provided, or contributed to, the probable cause for Mangione's arrest that justified the subsequent search of his backpack incident to that arrest resulting in the discovery of the gun and manifesto. The significance of the gun as evidence against Mangione's self-evident, particularly if the ballistics match. The manifesto is very meaningful because it provides the prosecutors the rare opportunity to present the jury with direct evidence of the inner workings of Mangio