SANTA FE, N.M. (AP) - A government report says Los Alamos National Laboratory's procedures for storing and tracking controlled substances used in experiments violated federal rules and might have left drugs unaccounted for.

The report by the U.S. Department of Energy's office of inspector general said the lab mislabeled drug purchases, failed to account for amounts used in experiments and kept substances long after research was complete.

The report doesn't say there was evidence that anything illegal occurred, but it says that a failure to manage inventories properly could have serious consequences.

The lab says a new process for managing controlled substances has been in place for nearly a year.

Department of Energy's office of inspector general says it wasn't recommending any action because the lab recently adopted a new policy for managing controlled substances.

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