Omaha emergency officials say a carbon monoxide leak forced them to evacuate a downtown Omaha high-rise.
The Woodmen Tower was evacuated Thursday after people working in the building's boiler room became ill.
About 200 people working in the building were evacuated and waited inside a nearby building as firefighters cleared the Woodman Tower of the poisonous gas.
Two people who had been working in the building's basement boiler room were hospitalized as precaution.