Rare Bird Police say they've confirmed that the handgun and suppressor found in possession of Luigi Mangione, the suspect ...

The ghost gun and suppressor found on a man the authorities have accused of killing the chief executive of UnitedHealthcare ...

Large-scale protein and gene profiling have massively expanded the landscape of cancer-associated proteins and gene mutations ...

The 26-year-old man accused of killing UnitedHealthcare CEO Brian Thompson was found after a manhunt in possession of a 3D-printed gun and 3D-printed silencer.

Homemade weapons like the one that police believe suspect Luigi Mangione used are increasingly common, prompting more efforts ...

Police said they are working to develop a full sense of his timeline in Pennsylvania and how long he has been in Altoona.

Alleged CEO killer Luigi Mangione was reportedly carrying a handgun that appears to be 3D-printed when he was arrested.

Luigi Mangione was allegedly found with what police described as a loaded 3D-printed firearm, a suppressor and a single loose ...

NEW YORK -- New York police detectives arrived in Atlanta on Saturday following a large number of tips linked to the as-yet-unidentified suspect wanted in Wednesday's fatal shooting of ...