Computer equipment belonging to the man investigating the death of Princess Diana has been stolen from his offices on Tyneside.
Lord John Stevens, former chief constable of Northumbria Police and the former Commissioner of the Metropolitan Police, has an office in Newcastle.
Just over a week ago computer equipment including a laptop was taken, without any sign of a forced entry.
A second break-in took place at the weekend, but nothing was taken.
The investigation into the thefts involves officers from both the Metropolitan and Northumbria Police.
However, police say that Operation Paget, the investigation into Diana's death, would not be affected as all information was kept in London.