Not just state but federal investigators, too, are looking into allegations that supervisors at President Donald Trump’s Bedminster golf club hired undocumented workers using fraudulent papers, the workers' attorney said.

Anibal Romero, a Newark attorney who represents five women who say they worked at Trump National Golf Club despite their immigration status, said he met with authorities from both the New Jersey Attorney General’s Office and the FBI in November — before his clients began going public with their stories.

The lawyer said he gave state officials fake green cards and phony Social Security numbers that a supervisor at the Somerset County golf club helped one of his clients, Victorina Morales, obtain.

Morales, 44, of Bound Brook, is a Guatemalan national who used to work as a housekeeper at the club and is now seeking asylum in the U.S.

Romero said he also gave state authorities pay stubs and W2s for both Morales and another client, Sandra Diaz.

Diaz, 46, is a Costa Rican native who now legally lives in the U.S. but says she was undocumented when she worked as a housekeeper at the club.

It was previously reported that Romero spoke to the Attorney General’s Office. But the New York Daily News on Saturday was the first to report about the documents and the FBI’s involvement.

Romero confirmed the details to NJ Advance Media on Monday.

Romero said he initially reached out to the office of Robert Mueller, the special counsel in the Russia investigation, about the issue in October. He said that was to sidestep going to the U.S. Justice Department, which was headed by then-U.S. Attorney General Jeff Sessions.

“I didn’t trust Jeff Sessions at the time. I didn’t think we’d be taken seriously,” Romero said, referencing how Trump’s administration has pushed aggressive immigration policies.

“So I figured I would look for guidance,” the attorney added.

Romero said the FBI called him weeks later after the special counsel’s office referred the matter to them.

The lawyer said he met with two FBI agents in Branchburg to talk about the case.

“The FBI said they would contact whoever they had to contact,” the attorney said. “I wouldn’t know who they contacted.”

Romero said he had already met with officials in the state Attorney General’s office to hand over the documents. The state, he said, has the only copies.

“The employees are not the ones committing the crime here,” Romero said. “It’s not illegal to work in the United States. It is illegal to recruit, procure fraudulent documents for undocumented immigrants, and then later verbally abuse them. ... This clearly looks like a practicing pattern."

Sharon Lauchaire, a spokeswoman for the state Attorney General’s Office, declined to comment Monday.

“It is our policy not to confirm or deny investigations," Lauchaire said.

Spokespeople for the FBI and the Trump Organization did not immediately return messages from NJ Advance Media seeking comment Monday.

The Trump Organization told the New York Times Times earlier this month the company has “tens of thousands of employees across our properties and have very strict hiring practices.”

“If an employee submitted false documentation in an attempt to circumvent the law, they will be terminated immediately," spokeswoman Amanda Miller said.

The White House declined comment to the Times.

The allegations that a club owned by Trump, who has made curbing undocumented immigration a touchstone of his presidency, may have hired undocumented workers made national headlines earlier this month when Morales and Diaz told their stories to the Times.

Morales told the newspaper she made Trump’s bed, cleaned his toilet, and ironed his clothes over the last five years.

She and Diaz alleged supervisors at the club helped them evade authorities to keep their jobs. But there is no evidence that Trump or executives at the Trump Organization knew about this.

Trump has previously said his companies do not employ undocumented immigrants.

Diaz told the Times she knew of many undocumented immigrants who worked at the club and she came forward because she is “tired of the abuse, the insults, the way (Trump) talks about us when he knows that we are here helping him make money."

The developments in the issue come as Trump and Democrats in Congress battle over the president’s insistence that federal lawmakers approve $5 billion in taxpayer money for a wall at the Mexican border — which has led to a federal government shutdown that is still going.

Brent Johnson may be reached at bjohnson@njadvancemedia.com. Follow him on Twitter @johnsb01. Find NJ.com Politics on Facebook.