State Attorney General Eric Scheiderman is looking into other voting issues across the state, after 120,000 Brooklyn voters were purged from the voter rolls for last month's presidential primaries.
Scheiderman's office has requested detailed accounting from the city's Board of Elections that would explain how the purge happened.
He says his office logged more than 1,000 complaints on April 19, mostly from people who were turned away at the polls.
Members of Schneiderman's Civil Rights bureau met with city board officials last week.
They are looking for patterns or consistent trends that may point to larger registration issues statewide.
His office plans to ask election boards in other counties to further investigate complaints there.
The city's Board of Elections has suspended two officials in connection with the voter purge.