Journey Into Mystery

April 16, 2007 — Today's killings of at least 29 people on the campus of Virginia Tech is among the worst school shootings in U.S. history. Here's a look at some other notable attacks on U.S. campuses:

Oct. 2, 2006: A gunman took about a dozen girls hostage, killing at least three of them, at a one-room Amish schoolhouse in Pennsylvania's Lancaster County, police said. The shooter was among the dead, and a number of people were injured.

Sept. 29, 2006: 15-year-old Eric Hainstock brought two guns to a school in rural Cazenovia, Wis., and fatally shot the principal, a day after the principal gave him a disciplinary warning for having tobacco on school grounds, police said.

Sept. 27, 2006: Duane Morrison, 53, took six girls hostage at Platte Canyon High School in Bailey, Colo. Morrison, sexually assaulting them and using them as human shields for hours before fatally shooting one girl and killing himself.

Aug. 24, 2006: Christopher Williams, 27, went to an elementaryschool in Essex, Vermont, looking for his ex-girlfriend, a teacher. He couldn't find her and fatally shot one teacher and wounded another, police said. Williams also killed his ex-girlfriend's mother, according to authorities. He shot himself twice in the head ater the rampage and was arrested.

March 21, 2005: Sixteen-year-old Jeff Weise shot and killed five schoolmates, a teacher and an unarmed guard at a high school on the Red Lake Indian Reservation in Minnesota before taking his own life. Weise had earlier killed his grandfather and hisgrandfather's companion.

Nov. 22, 2004: Sixteen-year-old Desmond Keels is accused of fatally shooting one student and wounding three others outside Strawberry Mansion High in Philadelphia. The attack apparently was over a $50 debt in a rap contest. Keels is set to stand trial on murder charges later this month.

April 24, 2003: 14-year-old James Sheets shot and killed the principal in the crowded cafeteria of a junior high school in south-central Pennsylvania, before killing himself.

May 26, 2000: 13-year-old Nathaniel Brazill killed his English teacher on the last day of classes in Lake Worth, Fla., after the teacher refused to let him talk with two girls in his classroom. He was convicted of second-degree murder and is serving a 28-year sentence.