wordpress category posts loop

<!-- START LOOP -->
            <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
                <div class="post">
                    <h1><?php the_title(); ?></h1>
                    <div class="image"><img src="<?php bloginfo('template_url'); ?>/timthumb.php?src=<?php echo(types_render_field( "news-image", array( "url" => "true", "proportional" => "false" ) )); ?>&q=100&w=683" alt="<?php the_title(); ?>" title="<?php the_title(); ?>" /></div>
                    <div class="content">
                        <?php the_content(); ?>
                    </div>

                </div><!-- post -->

                <?php endwhile; else: ?>
                <p><?php _e('Sorry, no posts matched your criteria.'); ?></p>
                <?php endif; ?>

/* HERE GOES ALL CATEGORY POSTS EXCEPT THE OPENED */
<div class="custom-news">
                    <div class="desc"><?php $category = get_the_category(); echo $category[0]->cat_name; ?></div>

                        <?php $catid = the_category_ID( false ); ?>
                        <?php $postCount = 1; $loop = new WP_Query( array( 'tax_query' => array(array(
                                'taxonomy' => 'category',
                                'field' => 'id',
                                'terms' => $catid
                            )), 'post_type' => 'post', 'posts_per_page' => 15 ) ); if ($loop->have_posts()) { ?>





                    <?php while ( $loop->have_posts() ) : $loop->the_post(); ?>

                    <div class="custom-item">
                        <a href="<?php the_permalink(); ?>"><?php the_title (); ?></a>
                    </div>

                <?php endwhile;  ?>
                <?php } ?>