CLAY COUNTY, Mo. – A father has pleaded guilty in Clay County, to involuntary manslaughter in the death of his infant daughter.

Dennis Matthews, 32, of Richmond pleaded guilty Thursday, August 22, to felony counts of first degree involuntary manslaughter, first degree endangering the welfare of a child and abuse of a child. Mathews and his wife, Rebecca Matthews, 31, were charged after the August 2012 death of their three month old baby. Doctors found the baby suffered blunt force trauma to the chest and abdomen that lacerated her heart and liver. Rebecca Mathews has pleaded guilty to seven counts of child endangerment charges in Clay County.

Dennis Matthews will be sentenced September 25 and Rebecca on October 4.