In accordance with recital 13 of Regulation 883/2013,internal investigations can be conducted only if the Office is guaranteed access to all premises of the institutions, bodies, offices and agencies and to all information and documents held by them.

OLAF investigators:

• have the right to immediate and unannounced access to documents, accounts and other information held by EU bodies in whatever format;
• can - in accordance with the procedures laid down in Regulation No 2185/1996- carry out spot checks on other organisations or businesses that may hold information relevant to the investigation of EU staff;
• can question witnesses and potential suspects.

For more information, see Regulation (EU, Euratom) No 883/2013.