Teams conducting a forensic audit in Arizona’s largest county on Thursday said they want more items to complete their review, which has turned up several major discrepancies.

The auditors, led by Florida-based Cyber Ninjas, want ballot envelope images, router images, splunk logs, hard drives that contain information about the 2020 election in Maricopa County, and details on the county’s policies and procedures as they try to complete a review that started nearly three months ago.

That information could help clear up issues that have been identified.

Doug Logan, the CEO of Cyber Ninjas, told senators at the Arizona State Capitol during a hearing that auditors can find no record of the county sending over 74,000 mail-in ballots. Ben Cotton, CEO of CyFIR, a subcontractor working on the audit, said the analysis of election management system and network uncovered “severe cybersecurity problems,” including that antivirus programs are not up to date.

That came after Arizona Senate President Karen Fann, whose Republican caucus authorized the audit late last year, said the auditors’ ballot count produced a different number from the county’s count.

Logan said the discrepancies with mail-in ballot records should trigger a canvassing proposal that was put on hold under pressure from the Department of Justice. “Based on the data we’re seeing, I highly recommend canvassing, because it is the one way to know for sure whether some of the data we’re seeing, if it’s real problems or whether it’s clerical errors of some sort,” he said.

The testimony on Thursday before Fann and Sen. Warren Peterson, chairman of the state Senate’s Judiciary Committee, immediately triggered a push to conduct a new election in a state President Joe Biden beat former President Donald Trump by about 10,500 votes.

“I call for the Biden electors to be recalled to Arizona & a new election must be conducted. Arizona’s electors must not be awarded fraudulently & we need to get this right,” Arizona Sen. Wendy Rogers, a Republican who has been keeping close tabs on the audit, said on Twitter.

But Maricopa County, which did not return emailed questions, disparaged the hearing on social media, calling the firms conducting the audit unqualified.

The county also repeated an earlier claim that Cotton “walked back” a statement that files were deleted from one of the country’s machines. Cotton has said he did not backtrack on the allegation.

Responding to the push to acquire more items such as hard drives, the county said, “If you didn’t subpoena it, there’s a reason you don’t have it.”