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