Investigators were still working on Wednesday to determine why a teenage girl opened fire two days ago at her private ...

Details are emerging after a gunman shot and killed UnitedHealthcare CEO Brian Thompson outside of a Manhattan hotel. Here's what we know.

Related: Clues emerge on possible motive in exec's shooting Slain exec had no security detail, a rare perk for MN companies Related: Slain exec had no security detail, a rare perk for MN companies ...

Police are reportedly questioning a suspect in Altoona, PA, in connection with the deadly shooting of UnitedHealthcare CEO ...

NYPD says the fatal shooting of UnitedHealthcare CEO Brian Thompson in Manhattan was "a brazen, targeted attack".

A manhunt is underway following Wednesday's fatal shooting of UnitedHealthcare CEO Brian Thompson outside a Hilton hotel in ...

His arrest and identification also provide more clues into a possible motive as he ... manifesto on health care MN insurers close offices, hide photographs after NYC shooting Related: MN insurers ...

Luigi Mangione, a 26-year-old man named as a person of interest in the killing of UnitedHealthcare CEO Brian Thompson, was ...

Police in New York said Wednesday that forensic investigators were able to match the gun Luigi Mangione was carrying when he ...

The shooting occurred about 6:45 a.m. Eastern time ... including when he was spotted in Central Park. “The motive for this murder currently is unknown,” Kenny said. “Based on the evidence ...

New York City Police Commissioner Jessica Tisch said that while investigators had not yet established a motive, the shooting was no ... the insurer’s Minnetonka, Minnesota-based parent company ...

Follow NBC News live updates for the latest coverage of the murder of UnitedHealthcare CEO Brian Thompson by a masked gunman ...