Police officers seen near the STEM School during a shooting incident in Highlands Ranch, Colorado, U.S. in this May 7, 2019 image obtained via social media. STEFFAN TUBBS/VIA REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT. NO RESALES. NO ARCHIVES. MUST ON SCREEN COURTESY STEFFAN TUBBSTiroteio em escola nos Estados Unidos fez um morto e oito feridosTiroteio em escola nos Estados Unidos fez um morto e oito feridosMundo
