Police are attending a shooting in California, with reports of 20 victims, say officials.
Fire officials in San Bernardino said it was responding to a "20 victim shooting incident" and it was working to clear the scene.
ABC News reports that there are 12 people dead but police have not confirmed that number.
It is still a "very active scene" and police are trying to secure the building, said a police spokeswoman.
There may be up to three gunmen, she said, and they were heavily armed and possibly wearing body armour.
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Update 1: BBC Live stream updates
(Score: 2) by Zinho on Thursday December 03 2015, @03:18PM
I gave you a touche point, but I wish I could take it back. Yeah, there was one lazy attribution to Newsweek (accompanied by the relevant issue date in plain text), but most of the assertions are taken from Kleck and Gertz, as published in the Northwestern University School of Law, Journal of Criminal Law and Criminology, vol. 86, issue 1, 1995, article titled Armed Resistance to Crime: The Prevalence and Nature of Self-Defense with a Gun [guncite.com].
Cut them some slack on the attribution, please.
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