If you believe that the executor has disappeared, send a letter via certified mail requesting that he provide you with a copy of the most recent account. You and the other heirs have an absolute right to know what's happened.
If you don't get a useful response within a meaningful amount of time, go to the courthouse and make a copy of the file, and ask the clerk to print out a copy of the docket sheet. Then see an experienced probate attorney for a review. The attorney may suggest that a complaint for an accounting get filed. This is a request which the court will automatically grant if an account has not been filed after a year since the appointment of the executor. Failure of the executor to respond may lead to a citing for contempt and possible removal.
Also, keep in mind that since the executor is a lawyer, he can be sanctioned for misconduct by the Board of Bar Overseers. However, I wouldn't go that route before your own attorney has determined whether there is some legitimate excuse for the delay.
I agree with just about all of Attorney Golden's response to your question. I would not consider a disciplinary action (unless it is ultimately determined there has been foul play by the attorney-executor). Instead, I would consider a litigation negligence action (if it is ultimately determined there has been financial harm caused by the attorney-executor). A legatee of a will should receive his/her share of the decedent's estate after the decedent's expenses have been paid. A legatee of a will should receive an accounting showing the financial activity (income, expenses, assets, and liabilities) of the decedent's estate on an annual basis. In the case of a non responsive executor, a legatee as an interested party of the estate can take legal action against such an executor (for example, a litigation negligence action). The legatee can call the respective probate court to explain to a clerk the situation and to find out the status of the estate so the legatee can decide how best to proceed.
Legal Disclaimer: Please note that this answer does not constitute legal advice, and should not be relied on since each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship. A lawyer experienced in the subject area and licensed to practice in the jurisdiction should be consulted for legal advice.
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