Three Indian peacekeepers were killed when attackers stormed a United Nations base in South Sudan where civilians had taken refuge, as violence and unrest continued unabated in the world's newest country.

Rebels from the second-largest ethnic group, the Nuer, stormed the base in Akobo in Jonglei state, targeting civilians of the majority Dinka ethnic community. About 1500-2000 rebels attacked the base where 43 Indian peacekeepers were present along with six UN police advisers and two civilians.

The United Nations Mission, UNMISS in South Sudan in a statement, strongly condemned the attack. It added there were reports of more casualties but UN did give any further details.