Wichita ? The convicted killer of a Kansas abortion doctor has been transferred to a new prison.

Kansas Department of Corrections spokesman Bill Miskell said Friday that Scott Roeder was transferred Nov. 2 from the prison in El Dorado to the one in Lansing. He declined to say why Roeder was transferred.

Roeder was convicted Jan. 29 of first-degree murder for shooting Dr. George Tiller in May 2009 as the doctor served as an usher at his Wichita church. He also was convicted of two counts of aggravated assault for threatening two ushers who tried to stop him after the shooting.