Las Vegas shooting: In yet another incident of mass shooting in the United States, a man shot and killed a woman and two children and critically wounded a third child before fatally shooting himself at a Las Vegas apartment complex on Monday. The latest development came days after three professors were fatally shot by a lone gunman at the University of Nevada, Las Vegas.Las Vegas shooting: In yet another incident of mass shooting in the United States, a man shot and killed a woman and two children and critically wounded a third child before fatally shooting himself at a Las Vegas apartment complex on Monday. The latest development came days after three professors were fatally shot by a lone gunman at the University of Nevada, Las Vegas.