Dynamic data with weird tags

Hey,

I am getting attachment title and and description but it is showing in both languages and wrapped in some strange tags.

HERE IS MY CODE

$img_detail = get_post($img_id);
$img_link = wp_get_attachment_url($img_id);
$img_title = get_the_title($img_id);
// $img_caption = !empty( wp_get_attachment_caption( $img_id ) ) ? wp_get_attachment_caption($img_id) : ‘No Title’;
$img_description = !empty($img_detail->post_content) ? $img_detail->post_content : ‘No Description’;

HERE IS OUTPUT

[:en]desc ENG[:nl]desc NL[:]