Gun siege at US high school
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US police surround a Colorado high school where an adult gunman is reported to be holding up to four hostages.
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Columbine High School in Colorado, scene of the deadliest school shooting in U.S. history, was evacuated on Thursday after a bomb threat.
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A 16-year-old student died after a gunman walked into a Bailey, Colorado, high school and took hostages in a classroom. The shooter fatally shot the female student and turned the gun on himself as a SWAT team stormed inside, authorities said.
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An 18-year-old gunman opened fire at his high school in this placid town in southern Finland on Wednesday, killing seven other students and the principal before mortally wounding himself in a rampage that stunned a nation where gun crime is rare.
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Teenagers arming themselves with weapons to protect themselves against attacks in the street
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BAILEY, Colo., Sept. 27 -- A gunman took six girls hostage at the high school in this mountain town Wednesday, using them as human shields for hours before he shot and fatally wounded a girl, then killed himself as a SWAT team moved in, authorities said.
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A gunman, possibly a parent, who said he   had explosives opened fire at a Colorado high school on   Wednesday, taking at least four hostages and prompting the   evacuation of hundreds of students, police said.
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Armed men seized a school in the Russian region of North Ossetia Wednesday morning and were in a gun battle with police, news reports said. The region borders with warring Chechnya.
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Sept. 1, 2004: About 30 gunmen seize a school in the southern town of Beslan, and at least 338 hostages die in explosions and gunfire that end the standoff two days later.
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A woman was shot in the head at a  Toronto-area high school on Friday and police locked down the  school with its students and teachers inside as they searched  for the gunman.
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The gunman who took students hostage at   a Colorado high school and killed a girl was a 54-year-old man   who lived out of his car and sexually assaulted at least one   hostage, police said on Thursday.
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Columbine High School, the site of the 1999 US school massacre, is evacuated after a bomb threat.
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Key events in gunmen's seizure of a school in the town of Beslan in southern Russia:
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BESLAN, Russia  - Explosions resounded and  automatic fire broke out on Friday near the Russian school  where hundreds of children and adults were being held by an  armed group, a Reuters correspondent at the scene said.
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A student was shot in the shoulder after a suspect fired eight shots toward a Hillsborough, North Carolina, high school, police told a local television station.
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Authorities said six armed people were holed up Wednesday at a high school in northeastern Arizona on the Navajo Nation. It was unclear whether the six were holding students hostage at Ganado High School or whether the six armed people were students.
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Video image of hostages sitting below explosives strung from basketball hoops in the gymnasium of a school in Beslan, Russia. Photograph: NTV/AP.