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: 1, Insightful) by Anonymous Coward on Thursday December 03 2015, @09:07AM
And all of them are one or two shootings over a five-year period, with the countries being so small that the what makes the difference is how many people the one crazy guy manages to shoot before the police get to him.
Wonder why Norway is so high? That one crazy guy decided to make his attack on a small island with a population not big enough to have any police on the island, but doing so on a day there was a political rally on the island. He had killed something like 50 people before the police got hold of a boat.
Statistics don't work very well when adding one unit (e.g. going from one to two shootings) doubles the count.
(Score: 0) by Anonymous Coward on Thursday December 03 2015, @10:53AM
Plus in the USA some "studies" may not count shootings with 4 victims as mass shootings. Whereas in safer countries 4 people getting shot is more likely to hit front page.
See: http://shootingtracker.com/wiki/Mass_Shootings_in_2015 [shootingtracker.com]
How many of such shootings would have been counted as "rampage shootings" those studies/statistics?