(Reuters) - An armed man claiming to have a bomb has taken a hostage inside a Pittsburgh, Pennsylvania high-rise building, local media reported on Friday.

Police were negotiating with a man who said he had a gun and a bomb in a 16th-floor office in 3 Gateway Center, according to the Pittsburgh Post-Gazette.

According to police, the man walked into the office, took a manager hostage and ordered everyone else to leave, the newspaper reported.

Police have cordoned off nearby streets and closed the local light rail station, the newspaper said.

Pittsburgh police spokesmen were not immediately available to provide further details.

(Editing by Ellen Wulfhorst and Vicki Allen)