ALBANY, N.Y. (AP) — A man previously charged with having child pornography cut an electronic monitoring device off his ankle before carjacking a woman, fatally stabbing her and raping her 10-year-old daughter, authorities said. David J. Renz abducted the school librarian and her daughter as they left a gymnastics class at a mall in the Syracuse suburb of Clay, about 150 miles west of Albany, on Thursday night, state police said Friday. Renz bound both victims, raped the girl and drove a short distance to a spot where the girl escaped and was found by a passing motorist, troopers said....