Hundreds of South Sudanese refugees fled into Uganda for a second day on Wednesday, bearing further grim testimony of an attack by government forces on the border town of Pajok in which at least 17 people were killed, according to a Reuters tally. Some were shot as they tried to flee. Two children were run down by a car. The testimony from the refugees, more than 3,000 of whom have gathered just inside the Ugandan border, offers a glimpse of the brutality of a three-year civil war ripping apart the world’s youngest nation. The government denies its Sudan People’s Liberation Army (SPLA) forces target civilians and said Monday’s operation in Pajok, a town of more than 10,000 people 15 km (10 miles) north of the Ugandan border, was to flush out rebel guerrillas.