Donald Trump's plane forced to divert and make unexpected landing due to 'mechanical issue'

Donald Trump's plane has been forced to divert en route to a Montana rally over a 'mechanical issue.'

The former president's private Boeing 757, nicknamed Trump Force One, landed in Billings, Montana instead of its intended destination of Bozeman Friday afternoon.

There were no reports of any injuries and Trump is now set to board a separate plane to take him to a rally in Bozeman scheduled for this evening. 

Trump's campaign posted a video of him upon landing in which he said he was glad to be in Montana but did not mention anything about the landing.

Secret Service is currently doing a sweep around the area before the new flight can take off, according to KVNH.

NBC Montana reported that there is no estimated time of arrival for Trump to Bozeman. 

With control of the Senate potentially at stake, Trump is visiting Montana on Friday to help oust incumbent Democratic Senator Jon Tester.

Tester has tried to convince voters he's aligned with Trump on many issues, mirroring his successful strategy from six years ago. 

While that worked in a non-presidential election year, it faces a more critical test this fall with Tester's opponent, former Navy SEAL Tim Sheehy, trying to link the three-term incumbent to Democratic presidential candidate Kamala Harris.

While Trump is a little late in arriving, the rally isn't scheduled to begin until 8pm local time. 

The local sheriff's office has said that the event is likely to still happen on time. 

The rally will be held at the Brick Breeden Fieldhouse on the campus of Montana State University.

Developing story, check back for updates...