WASHINGTON - New York Attorney General Andrew Cuomo yesterday expanded his investigation of auction-rate securities to include JPMorgan Chase & Co., Morgan Stanley, and Wachovia Securities LLC, asking the firms to negotiate agreements to provide relief for investors, as Citigroup Global Markets Inc. and UBS AG did last week.

Cuomo made the requests in letters sent to each of the firms, which are the third-, fourth-, and 10th-largest ARS underwriters respectively, according to Thomson Reuters.

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