Pakistan, Nov. 13 -- One person was killed and four others were shot and wounded when a gunman opened fire inside a gym before barricading himself inside an apartment building in Washington, DC, on Thursday morning, police said. The suspect holed up inside a seventh-floor unit, where police negotiators were able to open a dialogue, Metropolitan Police Interim Chief JW Carroll told reporters. After about an hour, police heard ?a gunshot and forced their way into the apartment, where they found the suspect with a self-inflicted gunshot wound. The suspect's condition was not immediately clear, but NBC and Fox News reported he had died, citing unnamed law enforcement sources. Carroll said police believe he lived in the apartment and was a mem...