Investigators say they found no clues to explain why Page went on the killing spree.
Military officials have said alcohol was likely involved in the killing spree, and Staff Sgt.
Just before he went on his killing spree, Mr Breivik published a 1, 500-page manifesto on the internet.
Lanza killed himself at the end of a killing spree that had started with him shooting dead his mother.
BBC: Newtown shooting: Dylan Hockley's parents recall attack
According to coroner Andrew Tweddle the killing spree at Horden on New Year's Day 2012 by Michael Atherton was "avoidable".
Davis would have been only the second Manson-related murder defendant to be granted parole since the killing spree began in 1969.
Dorner started his killing spree on 3 February when he shot dead the daughter of a former police captain and her fiance.
BBC: US fugitive Christopher Dorner died from single gunshot
In fact, he believes placing the blame on video games whenever a white male is guilty of a killing spree is racist.
She also reported breaking news for CNN and CNN Newsource and covered stories including the mass killing spree at a Connecticut factory in 2010.
Prior to Sunday's killing spree, you would have found much hatred of the Americans in Panjwai, where Western forces have come under attack countless times.
Because an occasional nut or fanatic goes on a killing spree, millions of law-abiding gun owners will henceforth be subjected to obnoxious harassment the Second Amendment notwithstanding.
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Hours later, the friends were "shocked" and "disgusted" and lucky to be alive after surviving a gunman's killing spree that left at least 12 people dead and dozens wounded.
More than 600 people died in a widespread and ethnically motivated killing spree after Odinga accused Kibaki of rigging the December 27 vote to win his re-election.
Dorner's killing spree began on 3 February when he shot dead the daughter of a former police captain who represented him at a police disciplinary board, and her fiance.
His killing spree began on 3 February when he shot dead the daughter of a former police captain who represented him at his police disciplinary board, and her fiance.
BBC: Charred body found after US manhunt for Christopher Dorner
Similarly, when I heard about the apparent racially motivated killing spree in Tulsa, Oklahoma, last week, it angered me because I could see my brothers and uncles in the slain victims.
Some doctors paint a scary worst-case scenario: A flu pandemic breaks out and beats down the immune systems of millions of people, and then staphylococci--the hospital strain and the nastier variant in the community--run wild on a killing spree.
And then secondly, can you talk a little bit about how much the recent incidents -- the burning of the Korans and the killing spree that left a number of Afghans dead -- how much did those incidents complicate the efforts to finalize the Strategic Partnership Agreement?
The LRA has since proceeded to carry out a trademark killing and abduction spree.
The former Navy reservist is suspected of killing three people in a spree across southern California, including a policeman.
BBC: Charred body found after US manhunt for Christopher Dorner
Dorner, a 33-year-old former Navy reservist, is suspected of killing three people in a spree across southern California last week, including a policeman.
BBC: Christopher Dorner: LA police end hunt after body found
The trial of a US army psychiatrist accused of killing 13 people in a shooting spree at an army base has been suspended while a court decides whether his beard should be removed.
The Aurora incident was about 16 miles from Columbine High School, where two students went on a shooting spree in April 1999, killing 13 people and wounding more than 20 others before committing suicide.
In 1999, several months after two students went on a shooting spree at Columbine High School, killing 13 people and wounding more than 20, President Bill Clinton asked the Justice Department and the Federal Trade Commission to study whether the entertainment industry was using irresponsible marketing practices to push violent content on teenagers and children.
WSJ: Warner Bros., Theaters Face Delicate Balancing Act After Colorado Shooting
Darras is serving a life sentence for the killing of a Mississippi man during the same crime spree.
Hardline Taliban went on an assassination spree - the most prominent being the killing in Kabul on 13 May of Maulvi Arsala Rahmani, a former Taliban and now member of the High Peace Council, a body which leads efforts to make peace with the Taliban.
He's locked up in the federal Supermax prison in Colorado for killing three people and injuring 23 during a nationwide bombing spree between 1978 and 1995.
That spree in the '80s and early '90s of kids killing kids, even at funerals, so shocked the city that leaders of all stripes -- political, religious, business, nonprofit -- initiated a comprehensive, community-based strategy to reach at-risk youth early, and over five years, the rate of youth homicides dropped 80%.
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