UPDATE 1-U.S. EPA suspected Fiat Chrysler of using 'defeat device' in 2015

WASHINGTON, June 16 (Reuters) - The U.S. Environmental Protection Agency told Fiat Chrysler Automobiles NV in November 2015 it suspected some of its vehicles had at least one "defeat device" which improperly bypassed emissions controls, emails disclosed under a public records request on Friday show.