@cbsmornings: Police say four people were shot and killed, including a New York City police officer, inside a Midtown Manhattan office building on Monday. The building houses the headquarters of the NFL and Blackstone, one of the world's largest investment firms. The motive is still under investigation. "He died as he lived. A hero," New York City Police Commissioner Jessica Tisch said of Officer Didarul Islam, who had two young sons and another child on the way. #nyc #newyork