2002:
Jan. 9 - Justice Department confirms it has begun a criminal investigation of Enron.
Jan. 10 - The White House discloses Lay sought help from two Cabinet members shortly before the company collapsed, but neither offered aid. The company's auditor, Arthur Andersen LLP, says it has destroyed tons of Enron documents.
Jan. 23 - Lay resigns as chairman and CEO.
Jan. 25 - Cliff Baxter, former head of Enron's trading unit and later vice president before his resignation in May 2001, found dead of a self-inflicted gunshot wound.
Feb. 4 - Lay resigns from the board.
Feb. 7 - Skilling, Fastow, Michael Kopper appear at Congress with McMahon and in-house Enron lawyer Jordan Mintz. Skilling testifies; Fastow and Kopper invoke Fifth Amendment rights.
Feb. 12 - Lay invokes Fifth Amendment at a Senate hearing after expressing "profound sadness" at Enron's collapse.
March 14 - Former Enron auditor Arthur Andersen LLP indicted for destroying Enron-related documents to thwart investigators.
April 9 - David Duncan, Andersen's former top Enron auditor, pleads guilty to obstruction for instructing his staff to destroy documents as per company policy.
June 15 - Andersen convicted.