Officers received a 911 call late Friday from the house about an argument between Karr, his girlfriend and his father, Sandy Springs Police Lt. Steve Rose said.
Karr, who was arrested last summer in Thailand after making bizarre, detailed confessions in the 6-year-old beauty contestant's death, was arrested in the domestic case shortly before midnight and charged with battery and obstruction.
Officers took Karr to a hospital after he complained of chest pains, and took him to jail late Saturday morning, Rose said. No other details were immediately released.
Karr's confession last summer was a sudden turn in the decade-old Ramsey killing in Boulder, Colo. But after Karr, a sometime teacher obsessed with the little girl's slaying, was brought back to the U.S., he was freed for lack of corroboration for his claims — or even any solid indication he'd been near Boulder at the time of the killing.