LE MARS, Iowa (AP) — A trial has again been delayed for a 45-year-old northwest Iowa man accused of killing his mother. The Sioux City Journal reports that a judge allowed the postponement in the trial of Jonathan Neunaber scheduled to begin March 31 so that his attorney could have more preparation time. A new trial date hasn’t been set. Online court records originally list a Dec. 9 start date for the trial.

Neunaber has pleaded not guilty to a first-degree murder charge in the slaying of his 80-year-old mother, Esther Neunaber. Her body and that of her husband, 83-year-old Donald Neunaber, were found July 9 in the Akron home they shared with their son. Authorities say Donald Neunaber died of natural causes. An autopsy determined his wife died of blunt for injuries.