A military helicopter carrying two Spanish pilots and two German officers crashed Thursday in Bosnia-Herzegovina, officials said, according to dpa. The fate of those aboard was not immediately known because the accident site in a mountainous, wooded area near the city of Travnik was hard to reach, the European Union Force (EUFOR) said in Sarajevo. In Madrid, Spanish Defence Ministry sources said two Spanish pilots and two German military officers were aboard the BO-105 helicopter.