They are hoping to find video that will help them find Kenia Mongue, who disappeared more than a week ago.
Police say she was in the area of 14th and Market Streets downtown.
Mongue was last seen at the Conoco on Speer Boulevard and Pennsylvania Avenue early last Saturday morning.
Police have also been searching for evidence in many places in the metro area and even out of the metro. They are using a helicopter to search for evidence in Keenseburg.
Police are treating this as a missing persons case and say they have no reason to believe she ran away.
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