At least 14 people were killed after gunmen opened fire at a social service agency in the Southern California city of San Bernardino on Wednesday.
A man and a woman suspected of carrying out the attacked were killed in a shootout with police while a third person has been detained, police said.
The slain suspects were armed with assault rifles and handguns, San Bernardino police chief Jarrod Burguan told reporters who added that the investigators are looking at the possibility of an explosive device at the scene.
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