Montana Sen. Tester gives update after airspace shut down: ‘There may still be something up there’

Sen. Jon Tester, D-Mont., gave an update after the airspace above his home state of Montana was closed and an unidentified object was shot down over Canada

NORAD issued a statement Saturday saying that it "detected a radar anomaly and sent fighter aircraft to investigate." The statement said that "aircraft did not identify any object to correlate to the radar hits," but according to Tester, that does not mean all is clear.

"There may still be something up there," Tester told CBS's "Face the Nation" on Sunday. "It may be a false alarm."

Tester told host Margaret Brennan that he believes "the investigation's still going on as we speak," and explained that when fighter aircraft looked into the situation Saturday night, it may have been too dark to draw a definitive conclusion. 

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"I'm sure as we speak it's being checked out right now," he said. 

The FAA told Fox News Digital in a statement Saturday evening that they had "closed some airspace in Montana to support Department of Defense activities." The area was over Havre, Montana, near the Canadian border.

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The airspace was reopened soon after without any official details.

On Sunday, the FAA imposed another temporary flight restriction, this time over northern Lake Michigan.

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The restriction was also short-lived, as officials told Fox News  it was lifted after a "potential contact" was examined by the U.S. military and deemed not a threat.

Saturday's unidentified object was the latest in a series of objects the U.S. has shot down this month. The first was determined to be a Chinese spy balloon containing surveillance equipment.

Fox News' Andrew Mark Miller and Lucas Tomlinson contributed to this report.