New evidence suggests that the suspect who killed UnitedHealthcare CEO Brian Thompson on Wednesday may have left a message behind on the bullet casings at the scene.

Police sources told the New York Post that the words “deny,” “depose” and “defend” were written on the live rounds and casings left behind by the assassin after the shooting.

Evidence also shows that each bullet and casing had just one word written on it leading them to believe he may have been trying to leave a message, sources said.

In a shocking video obtained by Fox News Digital, Thompson is seen walking down a New York City sidewalk when a masked man wearing a black hooded jacket and a backpack walks up behind him and raises a handgun.

The culprit fires off several shots. At one point, the gun appeared to jam. The assailant then appears to smack the gun on the side while walking toward the victim, who is attempting to get away.

Following the shooting, the suspect walked between two vehicles, got onto a bike then disappeared into Central Park, the New York City Police Department (NYPD) said.

It was previously reported that the suspect used a Citibike – which can be tracked – but the NYPD has clarified that the incident did not involve that type of bike.

Investigators hope accompanying evidence left behind will help identify him, including a cellphone discovered in an alleyway near the hotel where the shooting occurred as well as a cup in a trash can at a nearby Starbucks. UnitedHealth Group released a statement expressing their condolences and surprise at the day’s events.

“We are deeply saddened and shocked at the passing of our dear friend and colleague Brian Thompson, the CEO of UnitedHealthcare. Brian was a highly respected colleague and friend to all who worked with him.

We are working closely with the New York Police Department and ask for your patience and understanding during this difficult time. Our hearts go out to Brian’s family and all who were close to him.”