An Attleboro man is accused of slashing his brother and sister during a domestic dispute. Police told WPRI-TV that Peter Chem, 23, was arrested at a home on Holman Street just after 3 a.m. Sunday and charged with assault and battery. They say Chem was arguing with his brother when he grabbed a knife and slashed his brother in the head. Police say the sister suffered a cut to her hand when she tried to intervene. Police say neither injury was life-threatening.