U.S. Forces Assist in Korea Murder Investigation: Six weeks after a University of Pittsburgh student spending a semester at Keimyung University in Taegu, Korea, was stomped to death in a hotel room in Seoul, authorities have made no arrests. Police have a partial bloody footprint, a witness who says she saw the killer, and a witness who says she heard the beating. They have questioned U.S. servicemembers who might have seen 21-year-old Jamie Lynn Penich the night before she died. But the case has hit a block, and Korean police hope someone will come forward with new information.