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Attorney General William Barr said last month’s shooting at Naval Air Station in Pensacola was “an act of terrorism”

Barr, during a news conference Monday afternoon, said investigators have concluded that a deadly shooting last month at a Naval Air Station in Pensacola, Florida, was an act of terrorism.

“This is an act of terrorism,” he said, noting that there was jihadist influence.

The shooter posted a message on social media in September that stated “the countdown has begun.”

Several other messages were posted on social media, including a post two hours before the attack, Barr said.

This story is breaking and will be updated.