The firm conducting the investigation into the state Registry of Motor Vehicles has turned over copies of interview records from their investigation to the legislature, Massachusetts Secretary of Transportation Stephanie Pollack said Monday.

Lawmakers received the records despite the fact that Grant Thornton, the firm leading the investigation, previously said it wanted to keep them classified, Pollack said Monday on Greater Boston.

“We said all along that we thought it was the right thing to do,” Pollack said. “The company had some concerns. We agreed 100 percent that it was the legislature’s right to see those documents.”

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The Baker administration hired Grant Thornton to investigate the RMV after a motorcycle crash in New Hampshire in June, which killed seven people, revealed a backlog of thousands of unprocessed driving violations committed by Massachusetts drivers in other states.

Several officials, including Attorney General Maura Healey and Gov. Charlie Baker, had previously called on the firm to release the records.