SIGN UP Four people whose names match those of suspects on the FBI's Terrorist Screening Database have been arrested trying to enter the U.S. from Mexico since Oct. 1 of last year, according to multiple reports. What are the details? Axios first reported that U.S. Customs and Border Protection confirmed to Congress Tuesday that three of the individuals apprehended were Yemen nationals and another was Serbian, citing an unnamed congressional aide who was purportedly "briefed on the correspondence." Fox News then confirmed the report, citing a congressional aide "familiar with CBP information," noting that the "Serbian national was encountered on Jan. 28, amid an increasing surge in migrant numbers in recent months."