Investigators are convinced 'CEO assassin' Luigi Mangione did NOT act alone...and there are three key clues
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Top crime investigators are convinced the UnitedHealthcare CEO shooter carried out the cold-blooded murderer with the help of an accomplice, DailyMail.com can reveal. For the past two weeks, the nation's attention has been focused on the 'heartthrob' Ivy League graduate Luigi Mangione, identified by police as the man who shot Brian Thompson dead on a frigid morning in New York City earlier this month.
![[Surveillance camera footage showed the gunman, suspected to be Mangione, shooting UnitedHealthCare CEO Brian Thompson at point blank range outside of a Hilton hotel in midtown Manhattan on December 4]](https://i.dailymail.co.uk/1s/2024/12/18/18/92977511-14205925-Surveillance_camera_footage_showed_the_gunman_suspected_to_be_Ma-a-46_1734546389598.jpg)
In a 262-word manifesto reportedly found on Mangione when he was arrested, the 26-year-old suspect said he acted alone. But two leaders in the investigative field who have analyzed the case have now DailyMail.com that they believe some key details are being ignored – and that those clues point to at least one accomplice to the alleged murderer.
![[Mangione is accused of killing UnitedHealthcare CEO Brian Thompson at point-blank range on December 5]](https://i.dailymail.co.uk/1s/2024/12/18/20/93280381-14205925-Luigi_Mangione-a-5_1734552653435.jpg)
Brian O'Shea worked for 11 years in US Army intelligence, another decade as a contractor for US intelligence agencies, and then ran a high-end private intelligence firm until 2022. His investigations for clients have included several murder cases. O'Shea says the coincidence of the shooter arriving within five minutes of Thompson emerging from his hotel, suspicious behavior by others on CCTV, and conflicting witness statements, all suggest the killer knew exactly when to pounce thanks to help from at least one other person.
![[Surveillance cameras inside a New York hostel managed to grab a clearer picture of the smiling suspect during the manhunt]](https://i.dailymail.co.uk/1s/2024/12/18/20/92985117-14205925-Surveillance_cameras_inside_a_New_York_hostel_managed_to_grab_a_-a-7_1734552653741.jpg)
A second industry leader in private intelligence for celebrities and CEOs spoke to DailyMail.com on condition of anonymity due to being close to the case. This second top security expert also pointed to CCTV footage of the assassin talking on the phone to an as-yet-unidentified contact while walking to the Hilton Midtown 15 minutes before the murder took place.
![[One expert source pointed to CCTV footage of the shooter on the phone, which they say raises the prospect that an accomplice monitoring Thompson's movements called him to give him a heads up]](https://i.dailymail.co.uk/1s/2024/12/18/20/93288159-14205925-One_expert_source_pointed_to_CCTV_footage_of_the_shooter_on_the_-a-9_1734552658083.jpg)
