U.S. Senator John Cornyn says the 17-year-old student accused in a fatal shooting at a Texas high school used a semi-automatic pistol and a sawed-off shotgun to kill 10 people. Dimitrios Pagourtzis has been charged with capital murder in the shooting today that also wounded 13 people at Santa Fe High School near Houston. Cornyn says the suspect had a variety of homemade explosives in his car and at the school, including pipe bombs and “pressure-cooker-like bombs” similar to those used in the Boston Marathon attack. Cornyn says the suspect “planned on doing this for some time, he advertised his intentions but somehow slipped through the cracks.” President Donald Trump has ordered that U.S. flags fly at half staff as a mark of “solemn respect” for those affected by the school shooting in Texas. Flags are to be flown at half staff until sunset on May 22, 2018. The order applies to the White House and all public buildings and grounds, military posts and naval stations and vessels, as well as at U.S. embassies, consular offices and other facilities abroad. The flag atop the White House was immediately lowered today.