The airspace being closed down is in the area around Havre, Montana not far from the U.S. border with Canada.

The news comes shortly after an unknown object was shot down by a U.S. military fighter jet in Canada.&nbsp;

<i>This is a developing story check back for details.</i>

<div class="author-bio"><p>Andrew Mark Miller is a writer at Fox News. Find him on Twitter @andymarkmiller and email tips to AndrewMark.Miller@Fox.com.</p></div>

The FAA announced Saturday evening it has shut down airspace over a portion of Montana to support "Department of Defense activities."

FAA closes airspace in Montana to 'support Department of Defense activities'

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