NBC 4 reporter Adam Kuperstein was giving a live on-air update on an active shooter situation in Jersey City this afternoon when gun shots began to intensify, sending him and a video journalist running.⁠

A police officer and three civilians were killed during a shootout in Jersey City which also left the two suspects dead, law enforcement officials said. According to senior law enforcement officials, the Tuesday afternoon shootout began when a detective saw a U-Haul truck possibly linked to the murder of a livery driver over the weekend in Bayonne. As the officer…

Two people were killed and one was injured before a gunman killed himself in a shooting at the Pearl Harbor Naval Shipyard in Hawaii Wednesday.

At least two people were killed and others were injured in a shooting at the University of North Carolina at Charlotte Tuesday. Police said a suspect was taken into custody. This is a developing story.

Four people are dead, including the gunman, following a shooting at a Fifth Third Bank building in downtown Cincinnati Thursday. The shooter has not been identified and it wasn’t clear if the victims were targeted, police said.

The woman suspected of opening fire at YouTube’s headquarters Tuesday wounded 4 people before shooting and killing herself, San Bruno Police Chief Ed Barberini said.

Police are responding to reports of gunshots near the YouTube headquarters in San Bruno, Calif.

At least seven people were shot and one killed at Bronx-Lebanon Hospital in New York City on Friday. Police confirmed the shooter, Dr. Henry Bello, was dead.

Confusion over armed patrols during an active-shooter training exercise at Joint Base Andrews led to a lockdown. News4’s Prince George’s County Bureau Chief Tracee Wilkins reports.

Joint Base Andrews was locked down for nearly three hours Thursday after someone mistook a security exercise for an actual threat, officials said.

A massive manhunt for the people who opened fire on a holiday party outside of Los Angeles ended Wednesday afternoon with a man and a woman, both suspected shooters, dead and a third person detained, police said. Fourteen people were killed and 17 wounded at a social services facility east of Los Angeles, according to the San Bernardino Police Department....