纽约医院开枪凶手原来是非洲移民，因被控性骚扰而被解雇，

Dr. Bello was going to be fired by the hospital, but instead chose to resign, after he was accused of sexual harassment, said a police official, who was granted anonymity to discuss a continuing investigation. Another police official said Dr. Bello had left the hospital some time ago. “He didn’t leave voluntarily,” the official said.

Dr. Bello was armed with a rifle, an AR-15, that investigators believed he sneaked into the hospital under his lab coat, the two police officials said.

While investigators were still trying to determine a motive, one official said, “Most likely it’s a workplace violence on the part of a former disgruntled employee.”

The New York State Education Department said that Dr. Henry Bello had received a limited permit to practice as an international medical graduate in order to gain experience so he could be licensed. The permit was issued on July 1, 2014, and expired on July 1, 2016. He also had a pharmacy technician license that had been issued in California in 2006.