Police investigating motive for mass shooting inside NYC office building

Begin with the breaking news and the search for answers now underway after a deadly shooting, a mass shooting inside a Manhattan skyscraper. Four people are confirmed dead this morning, including an offduty NYPD officer who traded fire with the suspect after he stormed into the lobby armed with an M4 assault rifle. Police say the shooter, who was captured on surveillance with a weapon in hand, drove cross country to New York City and left a note behind.The question this morning, why that Park Avenue office ...