Letter correction pls!?

Question

To: M/s. DRC Partners
Subject : Your tender document exposed before tender submission date.

Project Ref: DR1 Project

We regret to inform you that the prices quoted by M/s. DRC Partners for the aforesaid project, the prices were disclosed out to the competitors before tender submission due date. Kindly investigate this matter and send us your explanation as immediately as possible.

Regards,

Rajesh

Answer 1

CONFIDENTIAL
To:Mr......
M/s DRC Partners
Subject: Your tender details revealed before last date for its
submission: Project Ref. DR1
Dear Mr....
I have learnt that details of your above-mentioned tender were revealed to your competitors by somebody, before the last date for acceptance of the tender was over.
The confidentiality of the tender process has thus been compromised, which is not permitted.
Please investigate this and let us have your explanation for the leakage, as early as possible.
Regards.
Yours faithfully,
Rajesh

Answer 2

Dear Sirs

Subject : Early disclosure of your tender for Project Ref DR1

We regret to inform you that the prices you quoted for the above project appear* to have been disclosed to competitors before tenders closed. Kindly investigate this matter and send us your explanation as soon as possible.

Yours faithfully (this is a formal letter - keep it thus)

Rajesh...... (your full name)

*Don't be definite that they have disclosed their prices - if there has been an error in the information you have, to accuse them directly could be construed as defamatory

Otherwise, I've just tidied up the letter and made it a little more formal.