UN Secretary General Ban Ki-moon today commended the bravery of Indian peacekeepers who fought nearly 2,000 rebels in an attack on a UN base in South Sudan and vowed to investigate incidents of grave human rights violations.

Two Indian soldiers Warrant Officers Dharmesh Sangwan and Kumar Pal Singh were killed when the rebel Lour Nuer youth attacked the UN base in the Jonglei state town of Akobo on December 19.

A third soldier Indian Battalion Warrant Officer Mondal Shabul was wounded in the chest during the attack and was flown to Malakal where he was reported to be in stable condition.