KANSAS CITY, Mo. (AP) — A brother and sister from Kansas City, Kansas, have pleaded guilty to armed robbery at a bank in a small northwest Missouri town. Federal prosecutors say 29-year-old Virginia Lynn Spencer, and her 25-year-old brother, Charles Ralph Spencer, each pleaded guilty Monday in federal court to aiding and abetting armed bank robbery and aiding and abetting the possession of a firearm in a crime of violence. A co-defendant, 23-year-old Steven Dale Robinson, also of Kansas City, Kansas, pleaded guilty to aiding and abetting an armed bank robbery. The three admitted stealing $11,833 from a Bank Midwest branch in Excelsior Springs on November 13. The Spencers entered the bank while Robinson drove the getaway car. Their car was involved in a chase with Clay County sheriff's deputies before crashing in Liberty.