Sen. Lamar Alexander (R-Tenn.) just said that his chief of staff is under investigation for child porn.

“I was just informed by the United States Senate legal counsel’s office that law enforcement agents are conducting a search of the personal residence of Ryan Loskarn, the chief of staff of my Washington, D.C., office regarding allegations involving child pornography,” Alexander said in a statement.

“I am stunned, surprised and disappointed by what I have learned. Based on this information, I immediately placed Mr. Loskarn on administrative leave without pay,” he added. “The office is fully cooperating with the investigation.”

Alexander named Loskarn, a former staff director for the Senate Republican Conference, his chief of staff two years ago.

Loskarn’s Hill career began in 2000 in the office of former Rep. Wally Herger (R-Calif.). He has also worked for Rep. Marsha Blackburn (R-Tenn.) as well as the House Rules Committee.