The Asssociated Press reports that The Transportation Security Administration appears to have thwarted a security test of airport screener effectiveness "by alerting screeners across the country that it was under way, even providing descriptions of the undercover agents."
The incident reported occurred in April of 2006, but has only recently come to light.
"The TSA inspector general is investigating the incident, and the agency would not discuss details of the case because it's part of an ongoing investigation," according to the AP story.
The report says that Congress is also looking into the allegation.
Rep. Bennie Thompson, who chairs the House Homeland Security Committee, has written a letter to TSA head Kip Hawley asking for an explanation of the incident by November 9, 2007.
Thompson has also written to the TSA IG requesting that the matter be investigated. It appears that the issue has come to light because someone sent Thompson's office the TSA internal e-mail alerting screeners of the impending test. A copy of the e-mail in question is appended to the end of the letters from Thompson to the TSA and the IG.