WASHINGTON  The chairman of the Senate Intelligence Committee, Senator John D. Rockefeller IV, said Thursday that the committee would investigate claims by two military eavesdroppers that they routinely listened in on private calls home from American military officers, aid workers and journalists stationed in Iraq.

Mr. Rockefeller, Democrat of West Virginia, called the accusations “extremely disturbing.”

“Any time there is an allegation regarding abuse of the privacy and civil liberties of Americans it is a very serious matter,” he said.

The two former intelligence officers, Adrienne Kinne, an Army reservist, and David Murfee Faulk, a Navy linguist, spoke Thursday to ABC News. They also were interviewed for a book on the National Security Agency by James Bamford, a former ABC producer and author of two earlier books on the agency, that is scheduled for publication next week.

Ms. Kinne and Mr. Faulk, both Arabic linguists, were based at Fort Gordon, Ga., where the N.S.A. has a large listening post focused on the Middle East. Ms. Kinne was there from 2001 to 2003 and Mr. Faulk was there from 2003 to 2007, Mr. Bamford said.