DES MOINES, Iowa (AP) — Prosecutors plan to call an 8-year-old boy to testify against his father in an Iowa triple-homicide trial. KCCI-TV reports that the state on Wednesday filed a motion that would allow the boy to testify via a closed-circuit TV feed. The child is the son of Marvin Esquivel-Lopez of Guatemala, who faces three counts of first-degree murder in the July shooting deaths of 29-year-old Rossibeth Flores-Rodriguez, her 11-year-old daughter and her 5-year-old son.

The killings happened in Des Moines. Court documents say the child was an eyewitness. Esquivel-Lopez pleaded not guilty. His trial starts Jan. 27. U.S. Immigration and Customs Enforcement officials have said Escobar-Orellana is in the United States illegally and had twice been deported before the shooting. He was convicted in 2010 of illegal entry into the U.S.