Five soldiers died when heavy Fighting broke out in the main military barracks in war-torn South Sudan's capital Juba, underscoring serious tensions within the national army as it battles a rebel uprising. Fierce gunfire lasting two hours was heard coming from the main barracks near Juba University, home to the presidential guards and other elite troops, from 9:30 am (0630 GMT). army spokesman Malak Ayuen told AFP five soldiers had been killed and that those found responsible would face a court martial. However the UN mission in South Sudan voiced concern in a statement at "a number of shooting incidents which occurred in the capital, Juba".