James Jackson, a Michigan-based trainer, has been charged with one count of assault with a dangerous weapon after an altercation last Wednesday with a racing official of Great Lakes Downs. According to the police in Fruitport Township, Mich., Jackson, 60, was arrested after brandishing a baseball bat at Lawrence Waite, Great Lakes's assistant racing secretary, just outside the stable gate. No one was seriously injured, according to the police report. Jackson spent a night in the Muskegon jail, and Waite was not arrested. Daryl Parker, the state steward at Great Lakes, said on Monday that the incident is under investigation and that a hearing has been tentatively scheduled for Saturday. Parker said that the incident began as a "verbal altercation" in the racing secretary's office. "This is all just hearsay, but I was told that the argument started after [Jackson] said something derogatory to Waite's mother," who also works in the racing office, Parker said. Jackson said he was innocent and would fight the charge. "I can't say a whole lot, but it's not true all the things they are saying about me," Jackson said on Monday. "They say I hit him and jumped on him. Those are lies. They say I cussed in front of [Waite's] mother. That's a lie." Waite did not return a phone call Monday.