Four Central African soldiers were killed in a key southern town in an attack blamed on Seleka rebels, a military source said on Tuesday.
The troops died during an early morning raid on Bangassou, on the border with the Democratic Republic of Congo, on Monday, just hours after a pre-dawn assault on the town of Gambo, which also lies in the south.
Army officers were unable on Monday to confirm if there were fatalities because all telephone lines in the area were down.