With the US and other countries on high alert for Daesh attacks, American authorities are warning the terror group’s followers may have infiltrated American borders with authentic-looking passports Daesh has printed itself with its own machines, according to an intelligence report obtained by ABC News.

The 17-page Homeland Security Investigations (HSI) Intelligence Report, issued to law enforcement last week, says Daesh likely has been able to print legitimate-looking Syrian passports since taking over the city of Deir ez-Zour last summer, home to a passport office with “boxes of blank passports” and a passport printing machine. Another passport office was located in Raqqa, Syria, which has long been Daesh's de facto capital.

“Since more than 17 months [have] passed since Raqqa and Deir ez-Zour fell to Daesh, it is possible that individuals from Syria with passports ‘issued’ in these Daesh controlled cities or who had passport blanks, may have traveled to the US,” the report says.

Sources: MENA