few seconds ago
What we know so far:
Police responded to reports of an active shooter at a social services center in San Bernardino, Calif., Wednesday afternoon.
There were initial reports of at least 20 victims, officials said.
Eyewitnesses said they saw as many as three gunmen, according to the San Bernardino Police Department.
Witnesses also said the suspects left the scene in a black SUV.
FBI and ATF agents are working to clear the building.
Bomb technicians were called to inspect a suspicious device.
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Dylan Stableford
a minute ago
A police robot now being used to explore what police fear may be an improvised explosive device in the south building.
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Jason Sickles, Reporter
a minute ago
President Barack Obama has been briefed on the active shooter situation in San Bernardino, according to the White House.
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Dylan Stableford