Mr P, may I humbly suggest that any available information has been gathered here. If not, then perhaps because it is not available. You take my inelegantly expressed point?

That being so, it might be asking rather a lot of human nature to take the unfortunate gentlemen concerned - and one feels for him - and indeed the EFDSS so earnestly as to exclude all levity or indeed rancour.

Have you tried simply asking the officers for a statement? If it has not been forthcoming, then should you be seeking confidential information?