U.N. peacekeepers killed in South Sudan as fighting escalates

Thousands flee fighting in South Sudan

(CNN) -- Attackers killed two Indian army peacekeepers in South Sudan and wounded a third one in the chest, the United Nations said Friday.

Two of the 30 civilians who took refuge at the United Nations' Akobo base were killed in the attack Thursday, said Joseph Contreras, the U.N. spokesman for South Sudan.

Their remains will be taken to the capital of Juba.

Deadly clashes have raged in the world's newest nation for days after a reported coup attempt in the capital over the weekend

President Salva Kiir blamed soldiers loyal to his former vice president, Riek Machar, for starting the violence.

Casualties are in the hundreds, including soldiers, the government said.

U.S. President Barack Obama sent 45 service members to South Sudan to support U.S. personnel and the American Embassy.

"In 2011, millions of South Sudanese voted to forge a new nation, founded on the promise of a more peaceful and prosperous future for all of South Sudan's people," Obama said in a prepared statement. "In recent years, against great odds, South Sudan has made great progress toward breaking the cycle of violence that characterized much of its history.

"Today, that future is at risk. South Sudan stands at the precipice. Recent fighting threatens to plunge South Sudan back into the dark days of its past," the President said.

Tensions have been high in South Sudan since Kiir dismissed his entire Cabinet, including Machar, in July.

The move inflamed deep tensions between Kiir's Dinka community and Machar's Nuer community.

U.N. officials have said they are worried the recent fighting is based on ethnic divisions, but the government has disputed that assertion.

Eleven people have been arrested in connection with the foiled coup