Getting your Trinity Audio player ready... Drew Angerer, Getty Images Clark County Sheriff Joe Lombardo briefs reporters Tuesday on the ongoing investigation into Sunday night's mass shooting in Las ...

There is no consensus among organizations that track shootings in the U.S. about the definition of "mass shooting" Twenty-one shot dead in Uvalde, Texas. Ten in Buffalo, N.Y. Four in Tulsa, Okla.

Wednesday’s massacre in San Bernardino was the latest mass shooting in America. By some counts — including a heavily cited version — it was the 354th of the year. By a narrower definition, it was the ...

In recent years, it seems Western Pennsylvania has seen more than its fair share of mass shootings. • LA Fitness in 2009. • Western Psych in 2012. • Wilkinsburg in 2016. • Tree of Life in 2018. • ...

On Monday morning, many in social media and the news reported that the Las Vegas tragedy is the United States' 273rd mass shooting of 2017. The factoid was widespread throughout Twitter, mentioned on ...

There is no universal standard for what constitutes a mass shooting, potentially causing discrepancies in data and research among authorities and experts -- and confusion for the average person. "Some ...

The highest court in Massachusetts has overturned the first-degree murder convictions of a man who provided the gun used in a double homicide but who was not present when the victims were shot. The ...