More than a thousand noncitizens may have been registered to vote in California after a processing error, according to officials.

The Department of Motor Vehicles admitted Monday a mistake caused as many as 1,500 noncitizens being registered to vote in the state.

The agency was alerted to the mistake when Randall Marquis, a Canadian citizen and legal permanent resident in the U.S., went to the Los Angeles Times to tell them about receiving a piece of mail from the DMV saying he was registered to vote.

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"I got this post card thing, this little piece of cardboard, and it said, 'Congratulations, you're registered to vote,'" Marquis told Sacramento ABC affiliate KXTV. "I thought, 'Oh, that's the stupidest thing I've ever heard,' and I threw it out."

The Newport Beach, California, resident rethought moving on, and decided to alert someone because of a series of voter registration errors in the state.

The error is the second pertaining to voter registration errors in as many months for the DMV. The DMV notified Secretary of State Alex Padilla in early September that some 23,000 Californians had their registrations handled incorrectly, including some being assigned the wrong political party.

PHOTO: In this April 5, 2018, file photo, California Secretary of State Alex Padilla speaks in Sacramento, Calif. Padilla is urging Californians to oppose the Trump administration plan for a citizenship question on the 2020 census.AP
In this April 5, 2018, file photo, California Secretary of State Alex Padilla speaks in Sacramento, Calif. Padilla is urging Californians to oppose the Trump administration plan for a citizenship question on the 2020 census.more +
"An extensive external audit by our departments found that approximately 1,500 customers may have been registered to vote in error," the letter from the DMV to Padilla read. "This error has been corrected and is separate from the processing error we notified you about in writing on September 5.

"This error occurred when DMV technicians processed customer requests at field offices to change voter eligibility responses on driver license applications," the letter continued. "Due to the order in which the change was processed, the customer's initial responses were retained instead of the correct and revised responses."

https://abcnews.go.com/US/1500-noncitizens-registered-vote-california-dmv-error/story?id=58377069