SEC's Schapiro: "Flash crash" report expected by month end

Securities and Exchange Commissioner Mary Schapiro gestures as she testifies before the House Financial Services Subcommittee on Capital Markets, Insurance, and Government Sponsored Enterprises, on Capitol Hill in Washington in this July 20, 2010 file photo.

NEW YORK (Reuters) - The top U.S. securities regulator said on Tuesday that the follow-up report on what might have caused the May "flash crash" is expected by the end of September.

"Toward the end of the month. That's our goal," Mary Schapiro, chairman of the U.S. Securities and Exchange Commission, told Reuters on the sidelines of the Economic Club of New York luncheon.

(Reporting by Herbert Lash; Editing by Lisa Von Ahn)