May 16, 2008 6:36 PM EST

The Office of the Commissioner of Baseball announced today that free agent Minor League player Aaron Jackson has received a 50-game suspension for testing positive for a drug of abuse in violation of the Minor League Drug Prevention and Treatment Program.

The suspension of Jackson will be effective immediately upon his signing with a new Club.

In 2007, Jackson pitched in the Washington Nationals organization for Single-A Hagerstown of the South Atlantic League.

Via RealGM Staff Report