Washington (CNN) The Iowa Democratic Party has not released results of Monday night's caucuses due to "inconsistencies." Read their full statement from Chair Troy Price:

Last night, more than 1,600 precinct caucuses gathered across the state of Iowa and at satellite caucuses around the world to demonstrate our shared values and goal of taking back the White House. The many volunteers running caucus sites, new voters registering as Democrats, and neighbors talking to each other about the future of our country demonstrated the strength of our party.

We have every indication that our systems were secure and there was not a cyber security intrusion. In preparation for the caucuses, our systems were tested by independent cybersecurity consultants.

As precinct caucus results started coming in, the IDP ran them through an accuracy and quality check. It became clear that there were inconsistencies with the reports. The underlying cause of these inconsistencies was not immediately clear, and required investigation, which took time.

As this investigation unfolded, IDP staff activated pre-planned backup measures and entered data manually. This took longer than expected.

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