The Serious Fraud Office says it has accidentally sent thousands of pages of evidence relating to an investigation into defence giant BAE Systems to the wrong person.
A statement from the office said it identified the data loss in May and that 98 percent of the material has already been recovered.
The office said that none of the material related to matters of national security.
More top news
By the time all the dead are counted, it will have grown to a great chorus of grief, Africa Correspondent John Ray reports.
For years we’ve been told to stay out of the hot summer sun. So how much sun is too much? Kylie Pentelow looks at the latest advice.
The Rotherham MP's piece appeared under a headline which read: 'British Pakistanis are raping white girls.'