Hi Guys.
When i delete an answer or unpublish an answer, it completes the task successfully but redirects me to a blank page with a JSON output on it, rather than the previous page with an alert...

{"error":"Item is deleted."}

	function deleteAnswer(){

		$user = &JFactory::getUser();

		$answer_id = JRequest::getVar('id',0,'','INT');

		if(!CAuthorization::authorise('answers.manage')){

			echo json_encode(array('error'=>JText::_('NOT_AUTHORIZED')));

		}else{

			if(!$answer_id){

				echo json_encode(array('error'=>JText::_('MSG_DELETE_FAIL')));

			}else{

				$model = &$this->getModel('answers');

				if($model->deleteAnswer($answer_id)){

                                      $this->setRedirect(JRoute::_('index.php?option='.APP_NAME.'&view=answers'.$itemid, false), JText::_('MSG_DELETE_SUCCESS'));

                                       echo json_encode(array('data'=>JText::_('MSG_DELETE_SUCCESS')));

				}else{

                                       echo json_encode(array('error'=>JText::_('MSG_DELETE_FAIL')));

				}

			}

		}

		jexit();

	}

Any ideas what is causing this?