Former FBI special agent Nicole Parker provides a detailed breakdown of the latest developments surrounding the UnitedHealthcare CEO's tragic death during her appearance on 'Mornings with Maria'. As the manhunt for the killer persists, one crime expert has brought to light a "highly disturbing" aspect of the investigation. New evidence at the Midtown Manhattan scene reveals words like "deny," "depose," and "defend" inscribed on the live rounds and casings, adding a chilling dimension to the case.

Chilling Details at the Crime Scene

The CEO of UnitedHealthcare was shot and killed in NYC, as reported. Former FBI special agent Nicole Parker emphasizes the significance of the shell casings found at the scene. "Take nothing off the table at this point because we're just at the very beginning stages of this investigation. But those shell casings, that is chilling," she says. And indeed, shell casings often hold valuable evidence. The fact that words were inscribed on them is very telling and could potentially lead to crucial leads in the case.

Who Was Brian Thompson, UnitedHealthcare CEO?

In a shocking video obtained by Fox News Digital, Thompson was seen walking down a New York City sidewalk when a masked man wearing a black hooded jacket and a backpack approached from behind and raised a handgun. After the shooting, the suspect managed to evade capture by walking between two vehicles, getting onto a bike, and disappearing into Central Park. This sequence of events has left investigators with a challenging task in identifying and apprehending the killer.

Potentially Case-Changing Evidence

Another piece of potentially significant evidence is an abandoned cell phone found in an alley. "The phone that was found in the alley, that is a treasure trove of information. If that was indeed the murderer's phone," explains former FBI special agent Nicole Parker. This phone could hold crucial details that might help solve the case and bring the killer to justice.

Investigators' Strategy and Public Cooperation

Andrew Witty of UnitedHealthcare sent a message to the company's employees in the hours after Brian Thompson's shooting. "The most important thing is that this person is identified and that he is brought into custody…. Somebody knows this shooter, somebody knows that this individual did this, and they need to report it to law enforcement," argues Parker. She also suggests that the cash reward should be increased to encourage more tips from the public. "Right now, there is a cash reward. I think they should up the cash reward substantially. But I do believe that someone knows who this individual is. And that is the greatest hope, in my opinion, of getting cooperation from the public to give as many tips as possible to lead them."Anyone with information is encouraged to contact Crime Stoppers at 1-800-577-TIPS, or for Spanish, 1-888-57-PISTA. Tips can also be submitted on the Crime Stoppers website by visiting crimestoppers.nypdonline.com.Fox News' Christina Shaw contributed to this report.