WASHINGTON (AP) -- A congressional committee will look into former baseball slugger Sammy Sosa's denial that he used illegal performance-enhancing drugs in light of a report that he tested positive for a performance-enhancing drug in 2003.

The chairman of the House Oversight and Government Reform Committee, Democratic Rep. Edolphus Towns of New York, says that the committee takes seriously suggestions that a witness had been misleading.

Towns said in a statement Wednesday that he will determine the appropriate steps following a review of the matter.

In 2005, Sosa told Congress that he had never taken illegal performance-enhancing drugs. The New York Times reported Tuesday that Sosa tested positive two years before his appearance at a House hearing.