JOHANNESBURG, June 18 (Reuters) - A South African man choked to death minutes after killing his wife and eating part of her face following a domestic argument, police said on Saturday. Police stormed into a house in rural KwaZulu-Natal near the border with Mozambique early on Friday after neighbours reported a disturbance, Captain Tienkie van Vuuren told Reuters. They found a 30-year-old woman who had been stabbed to death. "Her husband was sitting naked on top of her," she said. "He had stabbed her and was eating the flesh from her face. The guy came at them with a knife....