[1/2] Police deploy at the scene of a mass shooting outside an Old National Bank branch near Slugger Field baseball stadium in downtown Louisville, Kentucky, U.S. April, 10, 2023.
Police identified the shooter in Louisville as Connor Sturgeon, who was employed at the Old National Bank's downtown branch at the time of the shooting.
Monday's shooting brought the number of people killed by gun violence in Louisville to 40 in 2023 so far, Louisville Mayor Craig Greenberg said in his remarks at the vigil.
The nonprofit group defines a mass shooting as four or more shot or killed, not including the shooter.
While mass shootings have become commonplace in the U.S., the shooting stunned the Tennessee city and the country.