Efforts were underway to recover the submerged vehicle of four U.S. Army soldiers from the depths of a peat bog in Lithuania as crews continued to search for the missing servicemembers on Thursday.

Recovery efforts for the four missing U.S. soldiers and the submerged M88 Hercules armored vehicle that was found remain ongoing.

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

Hundreds of troops and emergency workers are racing to find four US soldiers who went missing during a training mission near Lithuania’s border with Belarus, the US Army said Thursday, after their armored vehicle was found submerged in a body of water.

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

The search for four U.S. Army soldiers who went missing while on a training exercise in Lithuania has been changed from a rescue mission to an operation to recover their bodies, according to officials.

Rescuers in Lithuania were digging on Thursday into a peat bog in a military training area to recover the vehicle of four U.S. soldiers missing for two days.

Four U.S. soldiers went missing during tactical training in Lithuania, not far from its border with Belarus, officials said. The missing Americans were riding in their M88 recovery vehicle, which "was discovered submerged in a body of water in a training area,