Toward the end of the work day today, I received a meeting invitation via Outlook from my direct manager. I was in a meeting when I received the invitation, and he had already gone home by the time I got out.
The meeting invitation is for a meeting with the CEO, tomorrow morning, before work, at a hotel a few miles from our place of work. The subject is "Meeting with [CEO's first name]" and no further details were provided. The CEO and myself are the only listed attendees.
I've briefly met with our CEO in the past, since our company is a small government contractor. In more than a year that I've been with the company, I've never heard of anyone being asked to attend a meeting that wasn't either at our office or on-site with a customer. Our company has no relationship with the hotel that I know of. None of my coworkers appear to have received similar invitations.
This seems unprofessional at best. Should I accept this meeting? How should I reply to this?
Additional information: I do have my manager's phone number, but he has made it clear that he doesn't want to be contacted outside of work hours unless it's an emergency. I do not have the CEO's phone number.