An independent audit released Friday revealed that the failure by the Massachusetts RMV to suspend the license of a 23-year-old truck driver accused of causing a New Hampshire crash in June that killed seven people, was part of a decades-long failure by the agency to stay on top of alerts from other states about Massachusetts residents who broke traffic laws.

It also revealed some documents were withheld from the investigating firm by MassDOT attorneys, who claimed attorney client privilege on more than 50,000 records, according to the report.

Attorney General Maura Healey told Boston Public Radio on Tuesday she has concerns that documents were withheld by MassDOT lawyers from the report.

"On this issue, as I understand it, there were documents that this law firm withheld, this law firm that was hired to do [an] internal investigation of RMV, withheld based on attorney client privilege," said Healey. "So those documents are being withheld. Of course it is the case the RMV or others could waive that privilege and just produce those documents. Frankly, I think this is probably, if there's going to be an instance where that could happen or maybe should happen, this is a public safety issue. I haven't looked at the audit report, I don't know all the specifics. But as a general matter, if you're claiming attorney client privilege, you also have the prerogative and right to waive that."

Gov. Charlie Baker and Transportation Secretary Stephanie Pollack hired the auditing firm Grant Thornton in June as the scandal at the Registry of Motor Vehicles unveiled in the wake of seven motorcyclists’ deaths. MassDOT released the 106-page Grant Thornton audit at around 4:40 p.m. on Friday.

"Grant Thornton neither obtained nor reviewed documents that the MassDOT General Counsel classified as privileged," according to the report. "Grant Thornton, however, requested and obtained from the MassDOT General Counsel both a privileged log and a signed representation stipulating that the withheld records are subject to legal privilege."

During her interview, Healey also discussed Gov. Charlie Baker's vape product ban, safe injection sites, and took calls from listeners about various consumer issues.