How Do You Formally Inform Staff About an Employee Who Has Left Properly?

I am looking for a formal letter format - "Formal Intimation to all staff about a departed employee." It is neither a termination nor an instance of leaving without notice. The employee left following the prescribed procedure.

Thank you.

This is to inform you all that Mr./Ms. _______ has resigned from the company effective (date). He/She no longer works for (Company name), and it is expected that no confidential information regarding the company and its clients will be disclosed to that employee. If you require any further information, please feel free to contact me.

Regards,
HR Manager