inserting row into UItableView error

I Have tableView that gived data from url api by 10 items. When it scroll to down I try to get next 10 items and insert them into row. So in viewDidload I get

 Alamofire.request(.GET, urlQuery, parameters: ["universityId": UBUniversitySettings.getUniversityId(), "page" : currentPage, "pageSize" : 10]).responseJSON{ (request, response, JSON, error) in
            println(JSON)
            var newsResponse = JSON! as NSArray
            for newsItemResponse in newsResponse{
                var newsItem:NewsModel = NewsModel()
                newsItem.newsImage = newsItemResponse.valueForKey("previewPic") as? String
                newsItem.newsTitle = newsItemResponse.valueForKey("title") as? String
                newsItem.newsDescription = newsItemResponse["content"] as? String
                newsItem.newsId = newsItemResponse["id"] as? String
                self.tableViewNews.addObject(newsItem)

               // self.newsTableView.reloadData()
                self.newsTableView.reloadSections(NSIndexSet.init(index: 0), withRowAnimation:UITableViewRowAnimation.Bottom )


            }
            self.currentPage = self.currentPage + 1

        }

and in

func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    if(indexPath.row == self.currentPage * 10  - 1){
        self.getNextNews()
    }
}

i get next items

func getNextNews(){
    Alamofire.request(.GET, urlQuery, parameters: ["universityId": UBUniversitySettings.getUniversityId(), "page" : currentPage, "pageSize" : 10]).responseJSON{ (request, response, JSON, error) in
        println(JSON)
        var newsResponse = JSON! as NSArray
        if(newsResponse.count > 0){
            var newsIndex:NSInteger = 0
            var paths:NSMutableArray = NSMutableArray()
            for newsItemResponse in newsResponse{

                var newsItem:NewsModel = NewsModel()
                newsItem.newsImage = newsItemResponse.valueForKey("previewPic") as? String
                newsItem.newsTitle = newsItemResponse.valueForKey("title") as? String
                newsItem.newsDescription = newsItemResponse["content"] as? String
                newsItem.newsId = newsItemResponse["id"] as? String
                self.tableViewNews.addObject(newsItem)

                // self.newsTableView.reloadData()
                self.newsTableView.reloadSections(NSIndexSet.init(index: 0), withRowAnimation:UITableViewRowAnimation.Bottom )
                var indexPathVal = self.currentPage * 10 + newsIndex

                var indexPath = NSIndexPath(forRow: indexPathVal as Int, inSection: 0)
                paths.addObject(indexPath)
                newsIndex = newsIndex + 1

            }
            self.newsTableView.reloadData()
            self.newsTableView.beginUpdates()

            self.newsTableView.insertRowsAtIndexPaths(paths, withRowAnimation: UITableViewRowAnimation.Bottom)
            self.currentPage = self.currentPage + 1
            self.newsTableView.endUpdates()



        }

    }
}

But my app crashed and give me a message 

Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (11) must be equal to the number of rows contained in that section before the update (11), plus or minus the number of rows inserted or deleted from that section (1 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'