New pics released in search for gunman who killed UnitedHealthcare CEO [Video]

 NEW YORK (AP) — The masked gunman who stalked and killed the leader of UnitedHealthcare, one of the largest U.S. health insurance companies, outside a Manhattan hotel used ammunition emblazoned with the words “deny,” “defend” and “depose,” two law enforcement officials said Thursday.

The words were written in permanent marker, according to one of the officials, who were not authorized to publicly discuss details of the ongoing investigation and spoke to The Associated Press on the condition of anonymity. Police also released photos of a person they said was wanted for questioning in connection with the shooting.

Related: Gunman who killed UnitedHealthcare CEO left message on ammunition

UnitedHealthcare CEO Brian Thompson, 50, died in a dawn ambush Wednesday. He was walking to the company’s annual investor conference at a Hilton hotel in Midtown. This area is just blocks from tourist draws like Radio City Music Hall and the Museum of Modern Art.

The reason behind the killing remained unknown. But …