Enron ( ENRNQ), as part of corporate housecleaning effort following its collapse, fired Richard A. Causey, formerly executive vice president and chief accounting officer, and Richard B. Buy, the company's executive vice president and chief risk officer. The energy trader, which filed for bankruptcy in December, said the terminations are effective immediately. The company said the firings resulted from a continuing review of the information and allegations in a report to a special investigative committee of the board of directors. Stephen Cooper, the acting chief executive and chief restructuring officer of Enron, said in a press release that he and the board "are dedicated to restructuring this company and emerging from Chapter 11 as an operating business. The new Enron and its Board are committed to ensuring that communication within the company is open and free-flowing, particularly as to any matters of professional concern regarding Enron's business affairs." A report authored by a committee of Enron's board was released earlier this month, and the findings were critical of the role of former Chairman and CEO Kenneth Lay in Enron's implosion. The company's downfall has led to a series of Congressional hearings and federal investigations, and Enron's erstwhile executives have appeared, but refused to testify, before Congress. Following the Enron debacle, numerous corporations, including Tyco ( TYC) and Global Crossing ( GBLXQ), have found themselves fending off questions about their bookkeeping.