-$group_details = ttTeamHelper::getTeamDetails($group_id); // TODO: refactor this.
-$group_name = $group_details['team_name'];
+$group_name = ttAdmin::getGroupName($group_id);
+if (!($group_id && $group_name)) {
+ header('Location: access_denied.php');
+ exit();
+}
+// End of access checks.