The search for an Ashland man wanted in the killing of his girlfriend has moved to Columbus. Police say a central Ohio resident reported seeing a man suspected of killing his on-and-off girlfriend during a vacation to North Carolina's Outer Banks, but a search turned up nothing. Officers searched for Nathan Summerfield on the east side of Columbus after a woman said she spotted Summerfield last night in a parking lot with a vehicle matching the description authorities had publicized. Summerfield is wanted on a murder charge in the death of 33-year-old Lynn Jackenheimer of Ashland, Ohio, who disappeared earlier this month while vacationing with Summerfield and her children. Her body was found in a vacant lot in Frisco, N.C. Police say Summerfield returned the children to Ashland and drove away. Summerfield's brother has told authorities that Summerfield said he strangled the woman.