15 collided in the northern region of Tabuk without causing casualties, the Saudi Press Agency quoted a military official as saying on Saturday. “During a joint exercise on air engagement a French Mirage aircraft belonging to the French armed forces collided with a Saudi armed forces' F-15,” said the statement. “The Saudi pilot and the two French pilots ejected safely, and were taken to the Northern Sector Command. Investigations are under way to determine the circumstances of the incident,” the official said. Last May, a Saudi F-15 crashed in the Eastern Province and its pilot was killed. The aircraft had been on a training mission when it crashed.