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CASTLE ROCK, Colo. (KDVR) — A person was barricaded inside an apartment alone in Castle Rock, police said Tuesday afternoon.

It’s not clear what the initial police response was for, but police said the barricaded person is believed to have fired a weapon.

People were asked to avoid the area of Red Hawk Drive and Wolfensberger Road.

Castle Rock Police tweeted at 10:41 p.m. that the situation had “been resolved.”