PITTSBURGH (AP) -- The Pittsburgh police SWAT team has responded to a high-rise office building where they say an armed man is holding a hostage or hostages.
Police say the man entered the building sometime after 8 a.m. Friday and went up to an office suite on an upper floor of Three Gateway Center. The building is one of six office buildings that dominate the city skyline.
Police have evacuated the building and say there have been no reports of shots fired or injuries.
Officers are preventing commuters from getting closer than about a block from the 24-story building. A light rail stop nearby is closed and at least 20 emergency vehicles surrounded the building.
A police spokeswoman has yet to provide more details but officers at the scene have told reporters about the general circumstances.