File Not Found when running PHP with Nginx

Recently I installed the latest version of Nginx and looks like I'm having hard time running PHP with it.

Here is the configuration file I'm using for the domain:

server {
    listen       80;
    server_name  localhost;

    location / {
        root   /usr/share/nginx/html;
        index  index.php;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location ~ \.php$ {
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        include        fastcgi_params;
    }
}

Here is the error I'm getting on the error log file:

FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream

Try another *fastcgi_param* something like

fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html$fastcgi_script_name;