Luigi Mangione is believed to be a person of interest in last week's deadly shooting of UnitedHealthcare CEO Brian Thompson, police said Monday. The 26-year-old was arrested on firearms charges in Pennsylvania, where New York police detectives were heading to interview him amid a massive manhunt for the shooter.

Luigi Mangione may waive extradition to New York City as early as Tuesday, Manhattan District Attorney Alvin Bragg said on Friday.

The man charged with killing UnitedHealthcare CEO Brian Thompson on a Manhattan street was seen near a Port Authority bus station 46 minutes after the shocking crime, New York police said, before he made his way to Pennsylvania, where he was eventually arrested.