Eight incident reports released this week by the US Navy have revealed new details about a series of encounters between Navy pilots and unidentified flying objects (UFOs) off the US east coast.

The reports filed to the Navy Safety Center were obtained by military website The Drive following a Freedom of Information Act request, and subsequently by CNN .

Each of the eight incidents occurred in a patch of airspace off the coasts of Virginia and North Carolina, with all but one occurring between 2013 and 2014. The reports refer to the UFOs as "unidentified aerial devices."

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