The search in dense, muddy swampland came after the U.S. Army vehicle disappeared in a waterlogged area on Tuesday.

The troops, assigned to the 1st Brigade, 3rd Infantry Division, out of Fort Stewart, Georgia, were last seen aboard an M88 recovery vehicle before it was found submerged in deep mud and water.

During drills in Lithuania, four US soldiers went missing. In the evening, NATO confirmed their deaths. RBC-Ukraine has gathered the key details about the tragedy near the Lithuania-Belarus border. Contents ・What happened near the Belarus border ・What Lithuanian officials say ・What training took place in Pabradė?

In a troubling development, four US Army soldiers have gone missing during a training mission near Lithuania's border with Belarus. The search for these servicemen has been officially confirmed by the US Army,

Four U.S. soldiers who went missing from a training ground in Lithuania during scheduled tactical training, NATO Secretary General Mark Rutte said Wednesday.

Officials said the soldiers disappeared during "scheduled tactical training" in an area near Lithuania's border with Belarus, and a search and recovery effort was underway.

The four soldiers were carrying out "scheduled tactical training at the time of the incident," the U.S. Army said on Wednesday.

A search and recovery effort is underway for the soldiers, who are all from the 1st Brigade, 3rd Infantry Division.