SPRINGFIELD, Ill. — Illinois’ elections director says the state is taking steps to limit the possibility of Russian interference in the March 20 primary election.

Steven Sandvoss, who heads the State Board of Elections, said Wednesday that the state is testing voting equipment and looking for vulnerabilities in the online registration system.

The Department of Homeland Security says Russian agents targeted elections systems in 21 states ahead of the 2016 election, including Illinois’. Hackers accessed 90,000 Illinois voter registration records. Officials notified the affected voters by mail.

Sandvoss says U.S. Department of Homeland Security officials told him at a meeting this month the Russians likely will try again.

The state requested in January a detailed federal assessment on its system’s vulnerabilities. Sandvoss could not say if the assessment will be ready before the March election.