Prosecutors at the Manhattan District Attorney's Office have begun presenting evidence to a grand jury as they work to secure ...

Marked shell casings from the assassination scene match the gun found on the suspect. His fingerprints match some key items ...

The NYPD says they're aware of the posters and advised companies to increase security measures for their executives.

The man accused of killing the head of one of the biggest U.S. health insurance companies is fighting being sent to face ...

Luigi Mangione, 26, was arrested at a McDonald's in Altoona, Pennsylvania, and charged in connection with the killing of ...

Luigi Mangione's lawyer explained why the suspect expressed frustration outside a Pennsylvania courthouse. Follow Newsweek's live blog.

The man charged with killing UnitedHealthcare CEO Brian Thompson on a Manhattan street was seen near a Port Authority bus ...

An assistant professor at the University of Pennsylvania has issued an apology after praising Luigi Mangione, the man accused ...

The killing of UnitedHealthcare CEO Brian Thompson has given rise to threats against health care industry workers and executives, as well as police officers involved in the case.

Luigi Mangione was arrested on gun charges in Pennsylvania and faces a murder charge in New York for the death of ...

The gun found on the suspect in the killing of UnitedHealthcare CEO Brian Thompson matches shell casings found at the crime ...