The Latest on a reported shooting at an office building in downtown Denver (all times local):

3:35 p.m.

Police say at least one person is hospitalized after reports of a shooting in downtown Denver.

Officers responded to a business in a busy part of downtown after a report of a gunman Tuesday afternoon. Several streets in the area were blocked off.

Police have not released any details about the injured person, and it was not immediately clear if the gunman was in custody.

Officers were clearing the Alliance Center, a building that houses several environmental organizations and provides shared workspaces. Other buildings in the area were locked down, and people were being asked to stay away from the area.

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3:15 p.m.

Denver police say at least one person is hospitalized after reports of a shooting in downtown Denver.

Officers responded to a business in a busy part of downtown after a report of a gunman Tuesday afternoon. Several streets in the area were blocked off.

Police have not released any details about the injured person, and it was not immediately clear if the gunman was in custody.