Gun Violence

Deputy Commissioner Frank Vanore said police believe there was a fight near the ice rink prior to the shooting.

The U.S. Supreme Court is expected to weigh in on regulations on 3D-printed firearms after several states have filed lawsuits regarding their regulation.

Investigators have uncovered evidence that Luigi Mangione had prior knowledge UnitedHealthcare was holding its annual investor conference in New York City.

Social media posts from Luigi Mangione show the man suspected of killing Brian Thompson underwent successful back surgery last year that alleviated debilitating chronic pain.

It's an early pushback by mostly Democratic-led states against President-elect Donald Trump’s 2nd administration, which Platkin said “routinely sides with the gun industry."

Up to $60,000 in rewards from the FBI and the Crime Stoppers program had been offered to anyone calling in a tip leading to a break in the case.

Luigi Mangione is being held without bail in western Pennsylvania in the killing of Brian Thompson.

Suspect Luigi Mangione’s fingerprints also matched a water bottle and a snack bar wrapper that police found near the scene in Manhattan, Commissioner Jessica Tisch said.

Investigators are working to piece together why Luigi Mangione may have diverged from this path to make the violent and radical decision to gun down UnitedHealthcare's CEO.

The survey found that only 48 percent of city residents believe Philly police are doing a good job.

Authorities said the 26-year-old had on him a three-page, handwritten document that shows “some ill will toward corporate America."

A ghost gun is a firearm without a serial number. Police said Monday that the gun used in last week's shooting of Brian Thompson may have been made with a 3D printer.

Luigi Nicholas Mangione, 26, was taken into custody Monday after police got a tip that the suspect had been spotted at a McDonald’s in Altoona, Pennsylvania.

Days after UnitedHealthcare CEO Brian Thompson was killed in a dawn ambush, the gunman was still at large and the reason for the killing remained unknown.

Anger and vitriol against health insurers filled social media in the wake of Thompson's killing.