(CBS) - The trial of the last of the three men charged with the kidnapping murder of 18-year-old Kansan Keighley Alyea began Monday in Johnson County District Court.
Joseph Mattox, 22 has pleaded not guilty to the first-degree murder and aggravated kidnapping and aggravated robbery of Alyea, reports the Kansas City Star.
According to police, three men, including her ex-boyfriend, Justin Hilt, and his cousin, Mattox, kidnapped Alyea southwest of Kansas City on Sept. 30, 2009, reports the Star.
Alyea suffered 30 stab wounds a fractured skull. Her body was found days later in a field.
Hilt was sentenced to almost 69 years in prison in July 2010. The other man, Gerald "Scott" Calbeck, pleaded guilty to a reduced sentence of second-degree murder, aggravated kidnapping and aggravated robbery, and will be sentenced on May 4, according to the Star.
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