Bondholders in Pacific Lumber Co.’s bankruptcy case said that they want to investigate possible fraud in a settlement that calls for the company to abandon its reorganization plan and support a rival proposal, the Wall Street Journal reported today. Bank of New York Mellon Corp., which represents the bondholders, said that it wants to probe several aspects of the agreement. The bank wants to look into whether the deal, a key development in the 15-month-old chapter 11 proceeding, is “the product of fraud or collusion and was forced on” Pacific Lumber, according to documents filed last Thursday with the U.S. Bankruptcy Court in Corpus Christi, Texas. Bankruptcy Court Judge Richard Schmidt will consider approving the agreement at a hearing Thursday.