A federal judge in New York early Saturday temporarily restricted the ability of Elon Musk’s Department of Government Efficiency to access the Treasury Department payment system, saying that doing so was necessary to prevent the potential disclosure of sensitive and confidential information.

The judge also ordered Musk and his team to “immediately destroy any and all copies of material downloaded from Treasury Department’s records and systems, if any.”

A federal judge early Saturday blocked Elon Musk’s Department of Government Efficiency from accessing Treasury Department records that contain sensitive personal data such as Social Security and bank account numbers for millions of Americans.