Missing Controller

Documents_Controller could not be found

Additional Information

The system searched in the following paths:
- /home/kingstonhumaneso/public_html/application/controllers
- /home/kingstonhumaneso/public_html/core/libs/controllers

Request Information
controller: documents
action: khsnews_april2012_web.pdf
url: url => documents/khsnews_april2012_web.pdf