New York Police released images showing the face of someone they sought for questioning after Brian Thompson, the UnitedHealthcare CEO, was shot and killed.

Two law enforcement officials say a masked gunman used ammunition emblazoned with the words “deny,” “defend” and “depose."

Chilling footage of the slaying of UnitedHealthcare’s CEO Brian Thompson in front of a Manhattan hotel emerged Wednesday afternoon. The clip, captured by a security camera, showed the assassin open fire at the 50-year-old insurance executive at close range after he approached Thompson from behind on a sidewalk outside the Midtown Hilton.