California election official can't say if non-citizens voted

California's top elections official said he doesn't yet know if any of the roughly 1,500 people mistakenly registered to vote by the Department of Motor Vehicles cast ballots in the June primary.

Secretary of State Alex Padilla said his office is investigating and working with counties to ensure ineligible people don't vote in the November election.

He said the roughly 1,500 people either told the DMV they were ineligible or didn't confirm their eligibility but were registered anyway. Padilla said the group included at least one non-citizen living legally in the state and perhaps many more. It could also include people under 18 or those ineligible to vote because of a criminal conviction. The DMV said none of the people mistakenly registered are people living in the country illegally.

According to the DMV, the incorrect registrations occurred between April 23 and Sept. 25 because of a "processing error." California held its primary election June 6.

Padilla says people were mistakenly registered through no fault of their own, and his office is removing them from the voter rolls. His office said at this point, there's no evidence to suggest any voter fraud.