Sec. 6.17. DENIAL OF BENEFITS: DEATH CAUSED BY SURVIVOR. A qualified survivor or beneficiary of a member's DROP account is not eligible for, or entitled to, benefits if the person is the principal or an accomplice in wilfully bringing about the death of a primary party or another qualified survivor or beneficiary of a member's DROP account whose death would otherwise have resulted in a benefit or benefit increase to the person. The determination of the board that a person wilfully brought about the death must be made during a meeting of the board from a preponderance of the evidence presented and is not controlled by any other finding in any other forum, whether considered under the same or another degree of proof.