The lawyers for Milberg Weiss, the US firm launching a major lawsuit on behalf of unhappy Enron investors, have reportedly said they are "actively considering" claims against rating agencies including Standard & Poor's, Moody's Investors Service and Fitch Ratings.
It is thought Milberg Weiss is to decide by the end of the month whether it will include the agencies when it submits an amended deposition.
The agencies came under the spotlight last week when Senator Joseph Lieberman, the head of a panel investigating Enron's collapse, called for them to be regulated by the Securities and Exchange Commission.
The agencies have been criticised for maintaining Enron's relatively high credit ratings until just days before its collapse.
