WASHINGTON - The United States said on Sunday it was alarmed by an escalation in fighting in eastern Democratic Republic of Congo between M23 rebels and Congolese soldiers, and again called on neighboring Rwanda to stop its support for the rebels.

The State Department condemned attacks by the M23 that killed at least three people in Congo's eastern city of Goma on Saturday. It also expressed concern over reports by the United Nations of shelling by the M23 into Rwanda territory.

"We urgently call on (the) DRC and Rwandan governments to exercise restraint to prevent military escalation of the conflict or any action that puts civilians at risk," State Department spokeswoman Marie Harf said in a statement.

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