PHILADELPHIA (AP) — Authorities say a pair of socks helped lead to an arrest in the killing of a Pennsylvania woman nearly 30 years ago. Philadelphia authorities say Theodore Dill Donahue is charged with murder and numerous other counts in the 1991 death of his girlfriend, Denise Sharon Kulb. His lawyer says Donahue maintains his innocence. Authorities say the case was built on new investigative tools, including photo-enhancing technology that connected a pair of separated socks, including one found on the body.