[CentOS] A Directory/Subdirectories Disappeared - which log file to look for this kind of information?

Hi,

A directory/subdirectories just disappeared on our dev box, and we don't know what happened. Is there a log file that logs this kind of stuff (such as who/date did a 'rmdir').  The /var/log directory has a lot of files and I'm not sure where to start.

Thanks in advance.
Mary