That employee is no longer with us

We are in receipt of your letter of [DATE, ex. June 10] addressed to [NAME, ex. Bill Williams]. We regret to inform you that [he / she] is no longer with our firm. {STATE WHERE EX-EMPLOYEE CAN BE REACHED, IF KNOWN, ex. He may now be reached at XYC Co.:

Bill Williams
XYC Co.
43211 Second Street
Toronto, Ontario
L3T 7N2]

We regret any inconvenience this may have caused you.

Sincerely,