The Denver district attorney's office has opened an investigation into the leak of voting system passwords that were posted to a Colorado state website in June before being taken down last month.

The Colorado Secretary of State’s Office has hired a new law firm to investigate how passwords to Colorado’s voting machines ended up online. Attorneys Beth Quinn and J. Mark Baird with the law firm Baird Quinn LLC will look into the security breach.

The Denver district attorney has launched an investigation into how a spreadsheet of voting system passwords ended up on the Colorado secretary of state’s website earlier this year.

Secretary Jena Griswold said she'd hired an outside law firm to look into the incident. That won't satisfy her critics.

Last month, the Colorado Secretary of State’s Office inadvertently posted a spreadsheet to its website with a hidden tab that included voting system passwords.

The 4th Judicial District Attorney’s Office is reporting they are cooperating with the Denver District Attorney’s Office into an investigation involving the Colorado Secretary of State’s Office.

On Friday, the 4th Judicial District Attorney’s Office announced it received two signed affidavits alleging violations of CRS 1-13-708, or tampering with voting equipment. Allegations of election law violations require an investigation in accordance with state law.