Mr. Thompson, who was fatally shot in Midtown Manhattan, rose to the top of one of the world’s biggest insurance companies.

By Julio-Cesar Chavez, Andrew Hay and Joseph Ax ALTOONA, Pennsylvania (Reuters) -New York prosecutors filed a murder charge against the suspect in the killing of a UnitedHealth executive, a brazen shooting that set off a tense five-day manhunt that culminated in his capture in Pennsylvania earlier on Monday.

Luigi Mangione is fighting extradition from Pennsylvania to New York in the murder of UnitedHealthcare Chief Executive Officer Brian Thompson.

The man accused of killing UnitedHealthcare’s CEO struggled with deputies and shouted while being led into court Tuesday as new details emerged about his possible motivation behind the ambush. In his first public words since a five-day search ended with his arrest at a McDonald’s in Pennsylvania,

An alumnus of the University of Pennsylvania who comes from an influential family with real estate and healthcare holdings, Luigi Mangione is now the suspect in the murder of Brian Thompson, the CEO of UnitedHealthcare.

After UnitedHealthcare’s CEO was gunned down on a New York sidewalk, police searched for the masked gunman with dogs, drones and scuba divers. Officers used the city's muscular surveillance system. Investigators analyzed DNA samples,