"People celebrating this — this is a sickness, honestly.... Up next, the other big news out of New York: Daniel Penny. A lot ...

Luigi Mangione is believed to be a person of interest in last week's deadly shooting of UnitedHealthcare CEO Brian Thompson, ...

Alleged CEO killer Luigi Mangione's family has a deep footprint in the state of Maryland, and friends and acquaintances of ...

Stay informed on the latest developments and key stories shaping the United States. From breaking news in politics, economy, ...

The ghost gun allegedly in Luigi Mangione's possession when he was arrested has been matched to three shell casings recovered ...

Luigi Mangione, suspected of killing UnitedHealthcare CEO Brian Thompson, suffered chronic back pain and was reported missing ...

Authorities are looking into online accounts believed to be those of Luigi Mangione, the 26-year-old Ivy League graduate ...

Before disconnecting from family and friends, Mangione resided in a Hawaii co-living space for a period before losing touch ...

The man arrested in Altoona Monday and charged with killing UnitedHealthcare CEO Brian Thompson in New York City on Dec. 4 ...

The archived posts include comments on a subreddit focused on spondylolisthesis, a condition in which a bone in the spine slips out of alignment.

The 26-year-old charged with murder landed a data engineering job after an Ivy League education. It's unclear what changed ...

Mangione and Penny both have found themselves caught in the tender mercies of Manhattan DA Alvin Bragg this year over two ...