Jan. 2 (UPI) -- Saudi Arabia's military struck United Arab Emirates-backed separatists in Yemen on Friday, prompting an unofficial declaration of "war" from the Southern Transitional Council.

Representatives of the separatist Southern Transitional Council in Yemen's Hadramout Governorate accused Saudi forces of bombing their fighters while they were near Yemen's border with Saudi Arabia.

They say a state of war exists in the province, but no casualty reports were provided for the military strike that involved Saudi ground and air forces.

The Hadramout province is situated in eastern Yemen and about 500 miles east of Yemen's capital city of Sanaa, with Saudi Arabia to its north and the Gulf of Aden to its south.

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