WASHINGTON — A federal judge examining the Trump administration’s use of an 18th-century wartime law to deport Venezuelan immigrants to El Salvador vowed Friday to “get to the bottom” of whether the government defied his order to turn the planes around.

Chief Judge James Boasberg is trying to determine if the administration ignored his turnaround order last weekend when at least two planeloads of immigrants were still in flight.

“I will get to the bottom of whether they violated my order, who ordered this and what the consequences will be,” Boasberg said during a hearing for a lawsuit challenging the deportations.

Earlier Friday, the Justice Department informed the judge that top leaders in President Donald Trump’s administration are debating whether to invoke a “state secrets privilege” in response to the district judge’s questions about the deportation flights.

Deputy Attorney General Todd Blanche said in a court filing that there are “ongoing Cabinet-level discussions” about Boasberg’s demand for more information. Boasberg ordered the Trump administration to either provide more details about the flights or assert a claim that disclosing the information would harm “state secrets.”

The Republican administration has largely resisted the judge’s request, calling it an “unnecessary judicial fishing” expedition. Boasberg dismissed its response as “woefully insufficient,” increasing the possibility that he may hold administration officials in contempt of court.

The Trump administration has transferred hundreds of Venezuelan immigrants to El Salvador under the 18th century law.