Story highlights The report warned that ISIS has access to passport printing machines and blank passport books

ICE issued the warning in recent weeks to U.S. law enforcement

Washington (CNN) A new intelligence report shared with law enforcement warns of ISIS' ability to create passports utilizing seized Syrian government assets, according to a law enforcement official with direct knowledge of the intelligence report's contents.

The report warned that, based on U.S. Immigration and Customs Enforcement's intelligence sources, ISIS has access to passport printing machines and blank passport books, raising the possibility the documents could be faked, according to the source.

The source noted that, beyond the report, there's concern that this capability coupled with ISIS access to government buildings in Syria that contain valid biographical data and fingerprint info on Syrian citizens give rise to the threat of identity theft.

State Department spokesman John Kirby said government officials are "mindful" that terrorists could be making false passports.

"We have been aware of reports, not just in the press, that they may have obtained this capability," he said. "Obviously, it's something that we take seriously. It's obviously something, clearly that we're mindful of."

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