How to politely turn down an on campus job interview?

<p>Hello,</p>

<p>Recently I accepted a job offer at my school, but before I knew I had the job I applied for another job on campus just in case the first one didn't fall through. The second job called for an interview on Tuesday and I didn't know that I had the first job until yesterday. The second job called today to see when I'd be available for an interview next week, but I will have to decline because I already have a student job on campus and there's probably someone else on campus who needs a job also. How would I go about rejecting the interview politely?</p>

<p>Just tell them something like “Thank you very much for the interview offer, but I have recently accepted another job offer. Thank you very much for your time and consideration.”</p>

<p>It’s not a big deal. Don’t worry about it too much.</p>

<p>Thanks @baktrax!</p>