Del Quentin Wilber reports on the Crime Scene blog that several security guards at the District’s federal courthouse accepted free baseballs autographed by superstar pitcher Roger Clemens shortly after a judge last month declared a mistrial in his perjury prosecution.

The U.S. Marshals Service confirmed Tuesday that it is investigating why and how six signed balls were sent to a guard by someone on Clemens’ defense team. That guard apparently passed the balls along to four or five other officers, the Marshals Service said.

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