Undercover agents were able to sneak fake explosives and banned weapons through Transportation Security Administration checkpoints, in an investigation that revealed a massive, system-wide security failure at America's airports.
The findings were part of a DHS inspector general probe. The report is still classified, but Fox News has confirmed the investigation found security failures at dozens of airports.
Homeland Security officials confirmed to Fox News that TSA screeners failed 67 out of 70 tests -- or 96 percent -- carried out by special investigators known as "red teams."
In one case, an undercover agent with a fake bomb strapped to his back set off a magnetometer -- but the screener still failed to find it.
A Department of Homeland Security spokesman told Fox News on Monday that DHS Secretary Jeh Johnson "immediately" directed changes upon learning of the investigation's findings, "to address the issues raised in the report."
The tests, and findings, were first reported by ABC News.
