July 9 (Bloomberg) -- Goldman Sachs Group Inc. was accused in a lawsuit by Liberty Mutual Insurance Co. of misleading investors in 2007 when it sold Fannie Mae preferred shares while betting against the U.S. mortgage market. Goldman Sachs misrepresented Fannie Maeâs health when it underwrote the offerings, in which the insurer invested $62.5 million, according to a complaint filed yesterday in federal court in Boston. The investment bank misstated the purpose of the sale by saying the offering was to raise surplus capital when it was actually needed to help Fannie Mae sustain its business, said Liberty Mutual, which accused Goldman Sachs of securities fraud. âAs a knowledgeable and sophisticated investor in the U.S. real estate financial markets, and with access to Fannie Maeâs financial records, Goldman Sachs knew or recklessly disregarded the actual status of Fannie Maeâs capital structure,â Liberty Mutual said in the complaint. The mortgage guarantor was seized by the U.S. in 2008. http://noir.bloomberg.com/apps/news?pid=20601087&sid=aCCbfOa8Lr4Q&pos=6 Recklessly ?