The fourth and final U.S. Army soldier who went missing last week during training in Lithuania was found dead, the United States announced Tuesday.

Three of the soldiers were found dead Monday after crews pulled an M88 Hercules armored recovery vehicle from a muddy bog near Pabrade, Lithuania. They disappeared on March 25 “while conducting a mission to repair and tow an immobilized tactical vehicle,” according to U.S. Army Europe and Africa.