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, Insightful) by Anonymous Coward on Thursday December 03 2015, @03:44AM
Any real sense? Really? Currently, there are enough guns in the country to arm just about every man, woman, and child. How many more guns do you need before you will feel safe? From my point of view what really needs to be reeled back in is this insane belief that reaching for a gun will solve all problems.