An Italian military helicopter has crashed in Bosnia, killing at least four people and injuring 12 others, Reuters reports. The disaster occurred near the village of Gorica in the Barcheko region. A CH-47 Chinook helicopter participated in the European Union peacekeeping mission EUFOR Althea. Photographs published in the local media show that after the fall the plane overturned and collapsed. The reasons for the crash are still unknown. An investigation was opened.