The lawsuit , filed after a 19-month investigation by the Employee Benefits Security Administration , names former Enron Chairman Kenneth Lay and former chief executive Jeff Skilling , among others .
The lawsuit , filed after a 19-month investigation by the Employee Benefits Security Administration , names Lay and Skilling among others .
At a news conference on Staten Island , U.S. Attorney Roslynn Mauskopf announced she would be taking over the probe from District Attorney William Murphy .