Kyodo News (subscription required) has revealed that Japan's Ministry of Economy, Trade and Industry found documents showing that Sony was aware of the scope of the PSN hack earlier than it had originally admitted.

Affected users were upset with Sony's apparent delay at informing them that their personal data was at risk, but Sony's justification was that the company needed time to determine the scope of the incident prior to making an official statement.

According to the documents, Sony had confirmed on April 25 that a "fairly large amount of data" had been accessed following the system intrusion. SCE president Kazuo Hirai, conversely, said in a press conference on May 1 that the company had learned of the intrusion on April 26 and had taken until May 1 to inform the community due to assessing the extent of the breach.

Sony's reasoning behind delaying disclosure of information regarding the hack was to not create unnecessary confusion among users while the precise nature of the leaked data was determined.

PSN services have now been restored, and Spanish authorities believe that they may have apprehended at least some of the culprits.

This article originally appeared on GamePro.com as Sony Delayed Informing Hacked Users