Story highlights The "all clear" was issued about three hours after the suspect got onto Yokota Air Base

Yokota Air Base is home to U.S. Forces Japan and the Air Forces' 374th Airlift Wing

(CNN) A suspect got onto a U.S. air base in Japan on Saturday "with a suspicious package," prompting a temporary lockdown and investigation, the base said.

Security forces from the 374th Airlift Wing "apprehended [the] suspect who gained unauthorized entry into at Yokota Air Base," according to a post Saturday on the base's Facebook page

That person was not identified, nor did authorities say what was in the "suspicious package."

Still, the fact the suspect is in custody was enough for officials to issue an all-clear and lift the shelter-in-place order at 8:50 p.m. (6:50 a.m. ET) Saturday.

"Security Forces personnel have since secured the scene and an investigation is ongoing," the base said.

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