Sony on Tuesday said it aimed to fully re-establish its PlayStation Network and Qriocity services by the end of May.

Earlier on May 1, Sony had announced that it aimed to resume the online gaming, music and video services by the end of last week, but the additional need to test security improvements to its computer networks in the wake of the high-profile data breach forced it to postpone the deadline.

Sony Computer Entertainment Inc. spokesperson Satoshi Fukuoka yesterday said that a probe into the recent data breach was ongoing. However, he declined to provide details.

The massive data breach, which was discovered on April 19, left vulnerable more than 100 million PSN and Qriocity members to personal information thefts.

The Japanese electronics giant also confirmed that personal data, such as names and credit card numbers, from 24.6 million users was stolen in the hacking attack last month. Another 77 million PSN accounts also suffered a considerable amount data loss in the attack.

However, Fukuoka claimed that the company didn’t receive any report of illegal use of stolen data.