This could be good news for a lot of defendants, and a real headache for their prosecutors.The Federal Bureau of Investigation conducted an internal investigation into its evidence collection and retention processes, and the findings, obtained by The New York Times, do not paint a particularly competent picture. The FBI found that agents often mishandle, mislabel, and even lose evidence; the audit discovered one piece of evidence from a drug case that has been signed out of storage since 2003.