fat free framework - Error using map in fatfree php -

when putting employee.php class in same directory index.php every thing working fine

index.php:

<?php $f3=require('lib/base.php'); $f3->config('config.ini'); $f3->map('/employee','employee'); $f3->run(); 

when putting employee.php class under directory, app examle , running following index.php

<?php $f3=require('lib/base.php'); $f3->config('config.ini'); $f3->map('/employee','app\employee'); $f3->run(); 

i getting error

internal server error  fatal error: cannot redeclare class employee  • /home/zaky/development/kinder/app/employee.php:2  

employee.php:

<?php    class employee{     function get() {die("get---");}     function post() {die("post---");}     function put() {die("put---");}     function delete() {die("delete---");} }