In the United States, two students were killed in a shooting at their school in New Mexico. Police said on Twitter that the attack took place today at a school located in the small town of Aztec. Police also said that the assailant was dead. <br/><br/>However, Christensen and New Mexico State Police Chief Pete Kassetas declined to say whether the suspect shot himself to death or was killed by officers from the Aztec Police Department.<br/>According to the non-profit Gun Violence Archive organization, gunfire caused the deaths or injuries of 3,700 children and teenagers this year in the United States.