Cakephp Session lost when calling an action of one controller from another controller

Question

I am using cakephp 1.3

I try to call an action of one controller in another controller and i was able to do it successfully. But when i tried to debug the session the session array was empty. In Profile controller i try to call user controller

App::import('Controller', 'User');
$newUserCntrlObj = new UserController;
$newUserCntrlObj->constructClasses();
$profileArr = $newUserCntrlObj->userprof($userId,1);

In user controller userprof() i am getting parameters via import class but when i debug session array nothing is there. Am i missing anything here? debug($_SESSION) = returns empty in userprof()