A black African doctor wielding an assault rifle stormed Bronx-Lebanon Hospital Center, gunning down at least six staffers before taking his own life, according to a senior law enforcement officials

Police have identified the shooter as 45-year-old Henry Bello, a former employee at the hospital with an extensive arrest record. He was a 45-year-old Nigerian family medicine doctor. Bello was found dead of a self-inflicted gunshot wound on the 17th floor after a two-story shooting rampage that left one doctor - a woman who has yet to be identified - dead and others fighting for their lives. Officials said that Bello tried to set himself on fire before committing suicide. A preliminary investigation reveals that Bello resigned from the hospital in 2015 in lieu of termination. Bello has past arrests for sex abuse, turnstile jumping, burglary and public urination, law enforcement sources said. Senior law enforcement officials describe Bello as a transient recently, with at least five different addresses since he left the hospital.