Police are searching for the assailant, who appeared to be in “lying in wait” before the “brazen, targeted attack.”

Surveillance video shows when Thompson appeared, the suspect stepped behind him and opened fire from close range, striking him in the back and leg. Police said the gunman's weapon appeared to jam, but he still managed to continue firing.

The apparent premeditated shooting of a high-ranking executive of an American company shocked the business and health-care communities.