WASHINGTON (CBSNewYork/AP) — The head of security operations at the Transportation Security Administration has been replaced.

That’s the word from the House Committee on Oversight and Government Reform, which posted on Twitter Monday night that “Kelly Hoggan has been removed from his position as head of security at TSA.”

The Associated Press obtained a memo sent by the TSA that does not mention Hoggan, but names an acting replacement. It says, “Darby LaJoye will serve as the Acting Assistant Administrator of the Office of Security Operations.”

LaJoye has directed security at John F. Kennedy International Airport and Los Angeles International Airport.

The TSA is not saying where Hoggan has been reassigned.

Hoggan’s ouster comes amid major problems with the TSA, including massive security lines at airports this summer, causing people to miss their flights.

The delays are partly due to a 10 percent cut in the number of screeners by the TSA and Congress in anticipation of more travelers using an expedited screening program, called PreCheck.

The TSA has committed to added nearly 800 agents at airports around the country this summer to address the problem.

The Homeland Security Inspector General previously revealed that agency employees failed to find dangerous items in more than 95 percent of covert tests at multiple U.S. airports.

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