A mass shooting is defined as four or more people shot.
Mass shootings since 2014
CINCINNATI -- One person was killed and 15 others were injured in a mass shooting at a Cincinnati nightclub early Sunday.
It's the largest such incident in the United States this year, according to data WCPO has reviewed from the Gun Violence Archive.
Police Chief Eliot Isaac says investigators believe several people opened fire.
The map below shows where mass shootings have happened in Greater Cincinnati and the United States so far this year, as well as in prior years (data from gunviolencearchive.org):