Shooter dead, 4 others wounded in Chicago shooting

A gunman shot four people and took a hostage in a downtown skyscraper Friday, then was killed after police fired at him, authorities said. The shootings in the 38-story Citigroup Center, which also houses a train station, sent office workers running from the building and stranded rush-hour commuters. Three victims were hospitalized in critical condition and the fourth was stable, fire department spokeswoman Eve Rodriguez said. The gunman, armed with a snub-nose revolver, knife and hammer, shot the four over "several minutes," police Superintendent Phil Cline said.