community, entered the school with a handgun and possibly a rifle it appears he was killed by officers who responded to the shootings. president biden addressed the nation a short time ago more on his message in a moment this comes just ten days after the mass shooting at a supermarket in buffalo in which ten people were killed. one more horrific and stunning act of gun violence in a nation so weary from it we begin with morgan chesky in texas. reporter: lester, every update that s come in today on this story has only brought more heartbreak for this tight-knit community of only about 15,000 people. tonight, a massive law enforcement presence has descended on this small town, and it is converging on robb elementary school behind me. covered up in crime scene tape as investigators scour this area for evidence and try to find what caused thi 18-year-old gunman to go inside and open fire reporter: tonight, at least 21 live have been cut short. according to the state senator
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