Bank of America Corp.'s stock dropped more than 3% Tuesday on speculation that website WikiLeaks would soon release internal documents.

The Charlotte, N.C., lender, the nation's largest bank as measured by assets. has been trying to determine for more than a year whether any documents were leaked from inside the bank, said people familiar with the situation. WikiLeaks founder Julian Assange asserted in an October 2009 Computerworld magazine interview that he had the 5GB computer hard drive of a Bank of America executive.

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