legally legally with an ar-15 rifle, all done one day after he turned 18. he shot his grandmother, as we reported last night. crashed his truck near the school, as you see there. greg abbott, governor of texas did try to confront the shooter but he did not engage and the shooter was able to enter the school you see here. he also barricaded himself in his classroom. he distributed part of his plan to kill in what we are told was a private facebook message about 15 minutes before this shooting. he also reportedly sent text messages to a 15-year-old located in germany. the gunman was 18 years old and reportedly a high school dropout. reportedly there has been no criminal history identified yet. there is no known mental health history of the gunman. he used one weapon which was an ar-15, using two 23 rounds. that s additional information we re learning there, courtesy of the governor of the state, greg abbott. he is the chief executive of texas, he is law enforcement, he