Former President Donald Trump’s plane made an unexpected landing in Billings, Montana, on Friday night due to a mechanical issue, according to the U.S. Secret Service.

The issue was not related to security concerns. It is unclear if the plane was originally supposed to land in Billings or Bozeman, where Trump was scheduled for a fundraiser and rally.

The Trump campaign has not commented on the incident, NBC News has reported.

In a video posted online, Trump praised the beauty of Montana but did not mention the plane issue.

Written by B.C. Begley