The FBI has announced will be investigating whether baseball star Roger Clemens has lied regarding the use of performance enhancing drugs during a congressional inquiry.Mr Clemens has refuted allegations made by his former trainer Brian McNamee that he had abused performance enhancing drugs when he had appeared a for a House Oversight Committee this month.

If anyone of these men are lying they could face up to five years in jail for the crime of perjury.FBI spokesman Richard Kolko has said a potential re-inquiry is possible to refute these claims made by the trainer.