CROCKETT, Calif. (KGO) -- If you heard a loud noise in or near Crockett tonight, you aren't the only one.
We have received multiple calls from ABC7 viewers saying they heard a booming sound similar to a jet plane.
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The fire department says it was an over-pressurized factory line releasing steam.
It's happening on Loring Avenue. The cloud can be seen from across the Carquinez Bridge.
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There are no evacuations or road closures in place.
Officials say there is no threat to the public.