The SPLA has announced capture of six enemy Armoured Personnel Carriers (APCs) and destruction of enemy force 25km south-southast (SSE) of Akoka.
The SPLA also said it destroyed four Toyotas mounted with 50 calibre machine guns.
The rebels had by-passed Baliet to the south and tried to go to Paloich and tried to by-pass Akoka and travel north towards Paloich but fell into an ambush at Pelbeer.
SPLA infantry battalion Abushok defeated rebel force at 12pm with Mazulum sending reinforcements.
The SPLA said that they are pursuing the rebels who are running back to Malakal in disarray.
Still in Upper Nile State, Radio Tamazuj quotes Doctors Without Borders (MSF),an aid group which reports that the New Fangak has been wiped off the map and the hospital completely destroyed.
The town, which is also called Phom El Zeraf, is located in northern Jonglei state and is reachable by boat from the Upper Nile State capital Malakal.
MSF visited the area on Tuesday and “discovered that the town had effectively been destroyed, with trees and homes burnt to the ground and school buildings flattened,” according to a press release.
“The hospital, one of the main health facilities in the northern part of the state, had been demolished.”
The area, a stronghold of SPLM-IO, was attacked by government forces in November 2014 and later recaptured by rebels.