Disgraced National Security Adviser Michael Flynn cited a "family emergency" on Sunday after he suddenly cancelled a campaign appearance.

The Associated Press reported on Sunday that Flynn backed out of a campaign event for Republican U.S. Senate candidate Troy Downing at the last minute.

In a video posted by Downing on Saturday, Flynn explained that an emergency was forcing him to cancel the appearance.

"I had a family emergency at the last minute and I just simple couldn't make it," the former Trump staffer explained, adding that he "wholeheartedly" endorses Downing for Senate.

In December, Flynn pled guilty to "willfully and knowingly" making false statements to the FBI, a charge stemming from special counsel Robert Mueller's Russia investigation.