diff --git a/controllers/item.php b/controllers/item.php
index 5912bbe..b805148 100644
--- a/controllers/item.php
+++ b/controllers/item.php
@@ -58,13 +58,14 @@ Router\get_action('show', function() {
     $menu = Request\param('menu');
     $item = Model\Item\get($id);
     $feed = Model\Feed\get($item['feed_id']);
+    $group_id = Request\int_param('group_id', null);
 
     Model\Item\set_read($id);
     $item['status'] = 'read';
 
     switch ($menu) {
         case 'unread':
-            $nav = Model\Item\get_nav($item);
+            $nav = Model\Item\get_nav($item, array('unread'), array(1, 0), null, $group_id);
             break;
         case 'history':
             $nav = Model\Item\get_nav($item, array('read'));
@@ -93,6 +94,7 @@ Router\get_action('show', function() {
         'item_nav' => isset($nav) ? $nav : null,
         'menu' => $menu,
         'title' => $item['title'],
+        'group_id' => $group_id,
     )));
 });
 
diff --git a/models/item.php b/models/item.php
index 5eabdb5..1baabc7 100644
--- a/models/item.php
+++ b/models/item.php
@@ -218,7 +218,7 @@ function get($id)
 }
 
 // Get item naviguation (next/prev items)
-function get_nav($item, $status = array('unread'), $bookmark = array(1, 0), $feed_id = null)
+function get_nav($item, $status = array('unread'), $bookmark = array(1, 0), $feed_id = null, $group_id = null)
 {
     $query = Database::getInstance('db')
         ->table('items')
@@ -228,6 +228,8 @@ function get_nav($item, $status = array('unread'), $bookmark = array(1, 0), $fee
 
     if ($feed_id) $query->eq('feed_id', $feed_id);
 
+    if ($group_id) $query->in('feed_id', Group\get_feeds_by_group($group_id));
+
     $items = $query->findAll();
 
     $next_item = null;
diff --git a/templates/item.php b/templates/item.php
index c079e49..b68e878 100644
--- a/templates/item.php
+++ b/templates/item.php
@@ -11,7 +11,7 @@
         <span class="read-icon"></span>
         <?= Helper\favicon($favicons, $item['feed_id']) ?>
         <a
-            href="?action=show&amp;menu=<?= $menu ?>&amp;id=<?= $item['id'] ?>"
+            href="?action=show&amp;menu=<?= $menu ?><?= isset($group_id) ? '&amp;group_id='.$group_id : '' ?>&amp;id=<?= $item['id'] ?>"
             class="show"
         ><?= Helper\escape($item['title']) ?></a>
     </h2>
diff --git a/templates/show_item.php b/templates/show_item.php
index 23869d5..02afbff 100644
--- a/templates/show_item.php
+++ b/templates/show_item.php
@@ -13,7 +13,7 @@
         <nav class="top">
             <span class="nav-left">
                 <?php if ($item_nav['previous']): ?>
-                    <a href="?action=show&amp;menu=<?= $menu ?>&amp;id=<?= $item_nav['previous']['id'] ?>" id="previous-item" title="<?= Helper\escape($item_nav['previous']['title']) ?>"><?= t('Previous') ?></a>
+                    <a href="?action=show&amp;menu=<?= $menu ?><?= $group_id ? '&amp;group_id='.$group_id : '' ?>&amp;id=<?= $item_nav['previous']['id'] ?>" id="previous-item" title="<?= Helper\escape($item_nav['previous']['title']) ?>"><?= t('Previous') ?></a>
                 <?php else: ?>
                     <?= t('Previous') ?>
                 <?php endif ?>
@@ -21,7 +21,7 @@
 
             <span class="nav-right">
                 <?php if ($item_nav['next']): ?>
-                    <a href="?action=show&amp;menu=<?= $menu ?>&amp;id=<?= $item_nav['next']['id'] ?>" id="next-item" title="<?= Helper\escape($item_nav['next']['title']) ?>"><?= t('Next') ?></a>
+                    <a href="?action=show&amp;menu=<?= $menu ?><?= $group_id ? '&amp;group_id='.$group_id : '' ?>&amp;id=<?= $item_nav['next']['id'] ?>" id="next-item" title="<?= Helper\escape($item_nav['next']['title']) ?>"><?= t('Next') ?></a>
                 <?php else: ?>
                     <?= t('Next') ?>
                 <?php endif ?>
diff --git a/templates/unread_items.php b/templates/unread_items.php
index 3d4d972..dfaea6c 100644
--- a/templates/unread_items.php
+++ b/templates/unread_items.php
@@ -37,6 +37,7 @@
                     'display_mode' => $display_mode,
                     'favicons' => $favicons,
                     'original_marks_read' => $original_marks_read,
+                    'group_id' => $group_id,
                 )) ?>
             <?php endforeach ?>