SPRINGFIELD, Ill. (AP) — Illinois elections officials are confident no voter data were compromised this summer when a hacker was able to see information on about 200,000 registered voters.

Ken Menzel is general counsel for the Illinois State Board of Elections. He says the online voter-registration system was shut down July 13 when officials noted an unusually high amount of traffic. Security was improved.

The FBI has uncovered evidence that foreign hackers penetrated two state election databases in recent weeks. State election websites in Arizona and Illinois experienced hack-related shutdowns earlier this summer.

This prompted the bureau to warn election officials across the country to take new steps to enhance the security of their computer systems, according to federal and state law enforcement officials.

Menzel says the Illinois system’s hacker was able to get information that could include driver’s license or portions of Social Security numbers. Each affected voter will be notified after a complete accounting.

He says the data accessed are not tied to vote-counting software so election results could not be altered.