**CORRECTION**
I originally referred to this atrocity as a "shooting." Apologies to all.
http://www.usatoday.com/story/news/nation/2013/09/04/spring-texas-houston-harris-county-stabbing-spring-high-school-dead/2762649/
A teen student was stabbed to death and three others were injured in a possible gang-related confrontation Wednesday at Spring High School in the Houston suburb of Spring, Texas, Harris County Sheriff Adrian Garcia said.
Three students described as "persons of interest" were taken into custody after the fight in a hallway leading to the school cafeteria, he said. At least two were taken away in handcuffs, KTRK-TV reports.
The sheriff's office later said it was questioning a 17-year-old boy as the only suspect, the Houston Chroniclereported.
Spring High School, which serves 3,000 students, was locked down, and classes were canceled the rest of the week.
Garcia said the stabbing occurred around 7:10 a.m. and "may have been gang-related." He said the incident started with a physical confrontation involving a "cutting instrument." Investigators have not found the weapon involved.
(snipped)