The most significant incident in Upper Nile occurred following the SPLA advance from Unity into Panyikang County on 12 April. Fighting is believed to have taken place between Wankur and Tonga with significant resistance from SPLA/iO units under the command of Johnson Olony. However, the SPLA were believed to have been building up forces in Unity state for some time for the purpose of carrying out this offensive suggesting they embarked with significant supplies and weaponry making their comparative advantage significant if not overwhelming. By 15 April, the SPLA claimed that they had taken Tonga from the SPLA/iO.
- IOM Return of Undocumented Afghans Weekly Situation Report (9 – 15 April 2017)
- NPM Bangladesh Round 1 Report March 2017