DOCUMENTS containing the details of people and companies involved with Banksia have been found outside the firm's Geelong office.

The Geelong Advertiser observed names, phone numbers, bank account numbers and loan details in dozens of documents, some of which had fallen from overflowing bins in Ryan Place last Friday.

Some of the documents were marked "To Be Destroyed".

Bankia spokesman Trevor Rowe said he was "confident that all customer information was very securely removed" last week by contractors under the provision of Banksia.

Mr Rowe said the only items thrown in bins were rubbish, and that while some documents might have contained Banksia logos, they did not contain sensitive information.

The Moorabool St office was officially closed on Friday after the firm went into receivership last month, putting $650 million worth of investments at risk.

Receivers McGrathNicol said affected investors should receive an initial return of 10c to 15c in the dollar before Christmas.

McGrathNicol spokesman Nick Maher said he was not aware of any concerns about the removal of Banksia documents.

Mr Maher said the receivers were interested in loan books, schedules of payments and information about assets held by the company that could be sold.

"Any documents that are relevant to the receivership would be secured," he said.

Read more at The Geelong Advertiser.