Report: Substances found on Clemens materials

NEW YORK -- Federal authorities have found performance-enhancing substances on the materials Brian McNamee says he used to inject Roger Clemens, according to a report by The New York Times.

McNamee turned over the syringes, vials and gauze pads to federal investigators last year, after he told baseball investigator George Mitchell he injected the pitcher with steroids and human growth hormone. The Washington Post reported Feb. 6 that tests linked Clemens' DNA to blood in the syringes given to investigators by McNamee.

A federal grand jury in Washington is investigating whether Clemens lied when he told a congressional committee last year that he didn't use illegal performance-enhancing substances.

Clemens has said repeatedly that his former personal trainer injected him with B-12 and the painkiller lidocaine.