BISMARCK, N.D. (AP) — Two North Dakota women are accused of beating a man with his canes and stealing $3,500. Shamra Campbell and Brittany Lafountain are charged in federal court with assault with a dangerous weapon, assault resulting in serious bodily injury, and robbery. The women pleaded not guilty Tuesday. Authorities say Campbell and Lafountain had been drinking at Larry Foster's residence in Belcourt on Aug. 2 when the assault occurred. Foster told police the women became upset when he refused to give them a ride. The women are accused of hitting Foster numerous times in the head with two canes and taking $3,500 from his wallet. Investigators say Foster suffered "numerous deep head wounds" and injuries to his hands and left arm. Defense attorneys were not immediately available for comment.