Sudan was able to seize Jabal Kala al-Laban, an area near the border in question, on Tuesday after an artillery barrage and an air strike, according to a Sudanese military source who spoke on condition of anonymity because he had no authority to speak to the press. On Monday, Ethiopia denied Sudan’s accusation that its army had captured and executed seven Sudanese soldiers and a civilian, instead blaming a local militia for the killings. read more Sign up now for FREE unlimited access to Reuters.com Register Sudanese government sources say Sudan has lodged a formal complaint with the United Nations Security Council over the killings. The Sudanese army fired long-range artillery from Monday morning until Tuesday afternoon, but no one was injured, said Asefa Ashege, a senior security official in Ethiopia’s Amhara region. Two locals said the Sudanese army had taken control of Jabal Kala al-Laban and destroyed a military base there. It was unclear whether the base belonged to the Ethiopian army or an allied militia. A Sudanese army spokesman did not respond to a request for comment. Ethiopian government spokesman Legesse Tulu did not immediately respond to requests for comment. Ethiopian military officials quoted Reuters as saying in a statement on Monday describing a previous border clash, but did not comment on the bombing. In a statement, the Sudanese army disputed what it said were reports of the movement and arrest of prisoners. The al-Fashqa dispute, which lies within Sudan’s international borders but has been settled by Ethiopian farmers for decades, has escalated in recent years amid a diplomatic dispute over Ethiopia’s construction of a hydroelectric dam. Sign up now for FREE unlimited access to Reuters.com Register Report from Dawit Endeshaw and Khartoum. Hereward Holland writes. Edited by: Lisa Shumaker Our role models: The Thomson Reuters Trust Principles.