Four people, including a Bangladeshi-origin NYPD officer, were killed in a mass shooting at an office building in New York City. The officer, Didarul Islam (36), had served in the NYPD for over three years. The gunman, identified as Shane Tamura from Las Vegas, had a history of mental illness and took his own life after the attack. Two others were injured. Officer Islam leaves behind a pregnant wife and two young children.