Calling the incident a “brazen targeted attack,” police said the suspect was waiting for Thompson before shooting him outside of a hotel in Midtown Manhatten. But while authorities stressed that the killing was “premeditated” and planned, the motive for the shooting is still unknown.

NEW YORK -- Brian Thompson, the CEO of United Healthcare, was shot and killed by a masked man near a Midtown Manhattan hotel early Wednesday, according to police sources. The shooting appears to be targeted but police do not know why, sources said. Thompson was not staying at the Hilton outside of which he was shot, sources said.

The CEO of UnitedHealthcare, one of the largest insurance providers in the nation, was fatally shot Wednesday morning outside the Hilton hotel in midtown Manhattan in what police said was a "brazen targeted attack.

Brian Thompson, the CEO of UnitedHealthcare, was reportedly shot to death in Manhattan on Wednesday morning. Here are some key facts to know about Thompson, 50, whose killer remained at large as of late Wednesday morning.

Leaders from Minnesota are reacting to the fatal shooting of UnitedHealthcare chief executive officer Brian Thompson outside a New York City hotel Wednesday morning.