MIAMI, FL.– An investigation is underway in Miami after a city bus driver pulled out a gun and shot and killed two passengers. It happened early Sunday morning. Investigators said a fight broke out between the driver of the metrobus and the victims. Police say moments later, the driver pulled o ut his weapon and fired those deadly shots. Police say drivers are not allowed to carry weapons. So far, police have not filed any charges against the driver. ...read more read less