New information suggests that four people with known ties to terror groups tried to cross our southern border on Sept. 10 – and today, the Homeland Security secretary neither confirmed nor denied it.

Today at a House Committee on Homeland Security hearing, Rep. Jason Chaffetz (R-Utah) asked Homeland Security Secretary Jeh Johnson about the report that four men tried to cross the Texas border last week, and that they have known ties to terrorist organizations.

Johnson said that he had “heard reports to that effect” but did not know the accuracy of the reports.

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Chaffetz was on “The Kelly File” tonight to discuss this.

“He’s the secretary of Homeland Security […] it was, I thought, a simple question,” he said.

Chaffetz revealed some shocking numbers: 466,000 people have been captured crossing the border over the last 351 days, and Homeland Security says 157,000 people got away. Those who were captured came from 143 different countries, including Syria, Iraq and Iran.

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“We have a porous border […] I’m worried about [ISIS] actually coming to the United States and crossing that porous border and getting into the homeland.”

Watch more above.