Time within which formal disciplinary proceedings must be instituted

Formal disciplinary proceedings before the Disciplinary Board must be instituted by the filing of formal charges within six (6) years from the accrual of the offense, provided that proceedings seeking discipline based upon fraud by a lawyer or for an offense the discovery of which has been prevented by concealment by the accused lawyer shall not be barred until the expiration of one (1) year after discovery of the offense by the aggrieved party or the General Counsel.