The Colorado Secretary of State’s Office on Tuesday sent voter data to the Trump administration’s election integrity commission following weeks of contention.

The office was initially slated to send the Presidential Advisory Commission on Election Integrity publicly available voter data — including names, addresses, party affiliations and birth years — on Monday as the panel probes voter fraud, voter suppression and other “vulnerabilities.” However it was locked out of the commission’s secure submission site and had to delay a day.

The commission was established by President Donald Trump in May and first asked Colorado for voter information on June 28. The panel then told the state to hold off on sending the data until court challenges to the request played out.

Last week a federal court in Washington, D.C., declined a request to halt the process and, in light of that decision, the commission renewed its request for voter data. Colorado Secretary of State Wayne Williams then planned to send the voter data Monday.

The integrity commission has been dogged by privacy concerns and distrust, particularly following Trump’s unfounded claims that millions of people voted illegally in 2016 and cost him the popular vote.

About 5,300 Coloradans have withdrawn their voter registrations since the panel requested voter information. There are more than 3.3 million active voters in the state.