In a statement, Omar Ibarra, spokesman of the Cesar Cayod Command of the NPAs Caraga Western Front, said the "peoples court" had long decided on the execution of 60-year-old Datu Marcelino Tuga.
But Ibarra said the killing of Tugas wife, Suget, was accidental and unintentional.
The Tuga couple was shot dead with caliber .45 pistols by three NPA hit men inside their home in Purok 3, Barangay Simbalan here at about 2:30 p.m. last April 20.
Tuga was a former CAFGU (Citizen Armed Forces Geographical Unit) member.
Police, however, are looking into other angles after a nephew of Tuga surrendered to authorities the other day.
Tugas nephew claimed that he accompanied a friend and two other persons to his uncles house at about 2 p.m. on April 20.
He said he was shocked when his friends companions shot his uncle pointblank while conversing with them.
In the statement, Ibarra said they will continue to execute those against the communist movement. He, however, allayed fears of residents of Barangay Simbulan over the killing of the Tuga couple.
Meanwhile, 50 heavily armed NPA guerrillas ambushed a group of soldiers and militiamen patrolling Barangay Mahagsay in San Luis, Agusan del Sur the other day.
The half-hour firefight that ensued left one CAFGU member killed and several other militiamen wounded. A number of rebels were also wounded in the clash, authorities said.