public function delete_attachments( $post_id ) {
		$attachments = get_posts( array(
			'numberposts' => -1,
			'post_type' => 'attachment',
			'post_parent' => $post_id,
		) );
		if ( ! empty( $attachments ) ) {
			foreach ( $attachments as $att ) {
				wp_delete_attachment( $att->ID );
			}
		}
	}