When in a staff meeting the other day two of my coworkers lied to my supervisor, and said it was another departments fault that their work is not getting done. I feel like I have a responsibility to tell my supervisor that she is being lied to. Especially since other people are being unfairly blamed.

I do not know how to go about it though because in terms of hierarchy at the workplace I am the lowest, and my job was only temporary and ends in a week. But I do not think that any of my other coworkers who were in the meeting would report it because I have caught them saying the same sorts of things, just not directly to my supervisor.

Is it appropriate for me to report them, should I even bother if I am am only there for another week?