A domestic dispute was reportedly behind Sunday’s deadly shooting in Wisconsin, a source with knowledge of the investigation confirmed to ABC. The estranged wife of suspect Radcliffe Haughton, who shot himself after killing three and wounding seven others, was among the three shot dead at a spa where she worked. Police had been called to the spa weeks before the shooting after Haughton slashed her car tires. He was arrested and later ordered to turn over all guns in his possession to the sheriff’s department—though clearly that didn’t keep him from getting his hands on another one. Police have also confirmed that Haughton’s wife filed a restraining order against him Oct. 8.