A man shot and killed his-ex wife in a shopping mall outside St. Louis on Wednesday and then killed himself, police said. The shooting occurred in the early afternoon inside Jamestown Mall, said St. Louis County police spokeswoman Tracy Panus. No one else was injured, but the mall was evacuated. The motive for the shooting just outside a Sears store had not been determined, Panus said. The names of the dead have not been released, but Panus said the couple had been married more than 20 years before recently divorcing and have grown children. He was 49, she was 47, and both lived in Hazelwood.