A teenager who may have had a grudge against a teacher opened fire with a shotgun at a Colorado high school yesterday, wounding two students before killing himself.
Police arrived immediately to lock down the scene in a Denver suburb - a sombre reminder of how Americans have learned to deal with school violence. The shooting came on the eve of the anniversary of the school massacre at Sandy Hook in Connecticut, where a gunman killed 20 children and six adults.
The shooter entered Arapahoe High School in Centennial armed with a shotgun and looking for a teacher he identified by name, said County Sheriff Grayson Robinson.
The teacher immediately left the school when he learned the student was looking for him, Robinson said.
"He knew he was the target and he left that school in an effort to try to encourage the shooter to also leave the school," the sheriff said. "That was a very wise tactical decision."
The shooter then shot two students, including a girl who was in serious condition. The other student suffered minor injuries and was expected to be released from the hospital early today.
A suspected Molotov cocktail was also found inside Arapahoe High School, the sheriff said. The bomb squad was investigating the device.