Indianapolis police 'shaken by this heinous act'

Indianapolis Metropolitan Police Chief Randal Taylor, Mayor Joe Hogsett and IMPD Deputy Chief of Criminal Investigations Craig McCartt all spoke at Friday's press conference.

The shooting - the latest in a spate of recent mass shootings across the United States that has reignited a fiery debate over gun violence - unfolded at a FedEx operations center near the Indianapolis International Airport after 11 p.m. local time on Thursday night, police said.