UPDATE: Bomb techs open back of stolen U-Haul outside Oklahoma City Hall, truck parked outside overnight - Article Photos 11/20

Emergency vehicles fill Main Street just west of Walker Ave. as police investigate a U-Haul truck parked on Walker ave. across the street from the west entrance to City Hall in downtown Oklahoma City Wednesday, April 17, 2013. Photo by Paul B. Southerland, The Oklahoman