Attempts to gain unauthorized access to 93,000 accounts on the Sony PlayStation Network, Sony Entertainment Network and Sony Online Entertainment prompted the online gaming network to lock the accounts on Tuesday.

The suspension of the user accounts was aimed at preventing hackers from using breached account to make purchases, Sony said in a statement following detection of the unauthorized access from Oct. 7 to 10.

Sony admitted that hackers succeeded in verifying sign-in IDs and passwords but assured that no credit card information were stolen. For unauthorized purchases, Sony will restore the amounts stolen.

"We will work with any users whom we confirm have had unauthorized purchases made to restore amounts in the PSN/SEN or SOE wallet," Sony Chief Information Security Officer Philip Reitinger said on the PlayStation blog, according to CNET.com.

Owners of the locked accounts, meanwhile, have been informed that they have to reset their passwords.

The latest attack follows the hacking of about 100 million gamers' accounts on Sony's PlayStation Network and Qriocity music services in April. To appease affected gamers, Sony gave them a $1 million identity theft insurance policy, free games and free one-month access to PlayStation Plus.