How can a User delete another User? | Devise + CanCan

Hi there,

I'm using Devise and CanCan.
All my users will be created and manage through my
Admin::UsersController by a User that has a Role of "Admin". Devise
will not register or unregister a User.

Every time that a log_in "Admin" User, that was authenticated
( before_filter :authenticate_user! ), try to delete other user Devise
drives me to sing_in page.

What should I do to let the "Admin" User delete others?

David Sousa

Codes:

class Admin::UsersController < Admin::AdminController
  before_filter :authenticate_user!
  load_and_authorize_resource

  # DELETE /admin/users/:id HTML