Armed student opens fire in U.S. high school, killing 10 people

Rescuers with a stretcher are seen at the entrance of a stadium where students sought shelter after shooting at Santa Fe High School in Texas, the United States, May 18, 2018. Ten people were killed and another 10 wounded on Friday when a student armed with a shotgun and a revolver opened fire at a high school in the U.S. state of Texas in the latest incident of gun violence against students. (Xinhua/Liu Liwei)