FBI investigates deadly Texas bar shooting as possible terrorism Fox News' Madeleine Rivera reports the latest on the investigation. Charles Marino, a former DHS advisor, also weighs in as federal agencies remain on high alert monitoring sleeper cells on U.S. soil. NEW You can now listen to Fox News articles! Austin Police responded to the deadly shooting at Buford’s bar in downtown Austin, Texas, early Sunday morning, arriving there in under a minute. Appreciation for the swift response from

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