After Medicaid officials improperly shared data about millions of people in January with immigration officials, ICE then shared that data with the data analytics firm Palantir, according to new court filings. Palantir operates an app called ELITE that is used by ICE agents to show the addresses of noncitizens who may be subject to deportation.

That revelation was made public in a motion filed Thursday by more than 20 Democratic attorneys general who sued the Trump administration last year over its data-sharing agreement between the Centers for Medicare and Medicaid Services and ICE.

Palantir said in a statement to NPR that the dataset in question had been purged.

U.S. District Judge Vince Chhabria in California ruled in December that health officials could share with ICE certain details from Medicaid data about immigrants without lawful status from the states that had sued, such as home addresses, dates of birth and immigration status.