LONDON (AP) - Britain's Serious Fraud Office says it temporarily lost track of thousands of documents gathered as part of its investigation into allegations of corruption at defense company BAE Systems PLC.

LONDON (AP) Britain's Serious Fraud Office says it temporarily lost track of thousands of documents gathered as part of its investigation into allegations of corruption at defense company BAE Systems PLC.

The fraud office said Thursday that 32,000 documents, along with audio tapes and other electronic media, were mistakenly shipped to the wrong place after the end of its investigation into the British military contractor.

BAE had been suspected of using corrupt means to win contracts in the Middle East, Eastern Europe and Africa. The company eventually paid hundreds of millions of dollars in a settlement with American and British authorities in 2010.

The Serious Fraud Office says almost all the documents have been recovered but some are still missing. It said none related to national security.