Eighteen killed, dozens more injured in Labor Day mass shootings

At least 18 people were killed and dozens more injured in 15 mass shootings over Labor Day weekend across the United States, according to the Gun Violence Archive.

The nonprofit group tracks such data and defines a mass shooting as any incident in which four or more people have been shot.

The deadliest incident over the weekend occurred in Saint Paul, Minnesota, where three people died and two were injured. 

The shooting that had the most people wounded occurred outside of a bar in east Cleveland, Ohio, with 10 people injured and one person dead, according to the report.

Two people died, including a Norfolk State University student, and five others were injured in an off-campus shooting in Norfolk, Virginia, over the weekend.