From KRGV (near Brownsville,TX):

Federal agents believe a South African woman they have in custody may have ties to terrorists.

Farida Goolam Mahomed Ahmed was taken into custody Monday when she tried to board a plane at McAllen Miller International Airport. The Federal Bureau of Investigation would not release any information Thursday, but NEWSCHANNEL 5 obtained court papers filed by an FBI Special Agent assigned to the bureau's Joint Terrorism Task Force...

Investigators found travel itineraries showing that Ahmed flew from South Africa to London, via the United Arab Emirates on July 8. Six days later, Ahmed flew from London to Mexico City. After initially claiming her VISA was left in New York, Ahmed later admitted that she was smuggled into the United States through the Texas border...

See also the earlier post "Congressman: Terrorists are infiltrating the U.S. via Mexico".