Jonel Nuezca, a police officer in the Philippines has been arrested after turning himself in on Sunday after he was accused of shooting his neighbour Sonya Gregario, 52, and her 25-year-old son Frank.
A video, which went viral and was shared on social media, shows him firing another bullet at Ms Gregario as she lies on the ground.
Mr Nuezca, who was accompanied by his young daughter at the time shot both the mother and son in front of his young daughter.
The shooting took place in the city of Tarlac as Mr Nuezca, who was off duty, tried to arrest Mr Gregario. He was arrested and charged with the double murder of a mother and her son following a dispute.
The killings have prompted an outcry and renewed calls for police reform.
Mr Nuezca, who was accompanied by his young daughter at the time, has not publicly commented on the incident. But local police chief Noriel Rombaoa told local broadcaster DZMM that he admitted to the killings.
The shooting took place in the city of Tarlac as Mr Nuezca, who was off duty, tried to arrest Mr Gregario.