A man shot and killed a woman in a shopping mall outside St. Louis on Wednesday and then killed himself, police said. The pair were cousins, according to a man who said he was a relative, reported The Associated Press. No one else was injured but the Jamestown Mall was evacuated. Marcus Gwynn said he heard four shots as he was walking into the mall to begin his shift at a Radio Shack store. «I seen a lady on the ground face down, then he sits on the ground and shot himself in the head,» said Gwynn, 21. He described both the man and the woman as in their mid-40s. The motive for the shooting just outside the Sears store had not been determined, said St. Louis County police spokeswoman Tracy Panus.