Close Why the Las Vegas shooting isn't considered terrorism A mass shooting is defined by the FBI as four or more people killed in a single shooting incident, not including the shooter. WTSP 7:48 AM. EDT October 03, 2017 TRENDING VIDEOS Three dead in murder-suicide T-Tapp Tuesday Small chance of tropical development in the tropics Tampa hotels tacking on questionable fees at checkout iOS 11 frustration and fixes Marine saved woman he just met What type of gun did the Las Vegas mass shooter use? Las Vegas gunman's brother speaks Soccer team salutes Las Vegas survivor from Md. Inside the chaos: Police release Las Vegas body cam footage More Stories Pets abandoned in U.S. Virgin Islands after… Oct 21, 2017, 11:11 p.m. Tampa mom honors son's memory by spreading message… Oct 21, 2017, 6:10 p.m. Lutz girl battling cancer sells lemonade for Las… Oct 21, 2017, 8:57 p.m.