Police K-9 units are aiding in the search for the last missing U.S. soldier after his armored vehicle submerged in a Lithuanian swamp last week.

On Monday, crews confirmed the deaths of three U.S. soldiers when they recovered the M88 Hercules armored recovery vehicle from a peat bog near Pabradė, Lithuania. According to U.S. Army Europe and Africa, the vehicle vanished on March 25 during a mission intended to repair and tow a non-operational tactical vehicle.

In a Tuesday statement, U.S. Army Europe and Africa reported that canine units from the Lithuanian military began their search efforts yesterday afternoon, with NATO ally Estonia joining the recovery operation early this morning.

“Two Estonian recovery dogs, Tilt and Maik, and their handlers flew from Tallinn, Estonia. They arrived on scene at 2:00 a.m. and began searching at 7:00 a.m. this morning. Handlers have positioned the dogs in a U.S. Navy Rigid Inflatable Boat to locate any trace scents below the surface,” it added. 

A search is ongoing Tuesday for the fourth and final missing U.S. soldier in Lithuania. (U.S. Army/Staff Sgt. Christopher Saunders)

Secretary of the Army Daniel Driscoll wrote on X Monday that “We will not rest until the fourth and final Soldier is found and brought home.  

“No words can truly capture the pain of this loss, but my deepest condolences go out to the families, friends, and fellow soldiers mourning their heroes,” he said. 

U.S. Army vehicles, including two M88 recovery vehicles, are near Vilnius, Lithuania, on Tuesday as efforts continue to find a missing American soldier.
(AP/Mindaugas Kulbis)

U.S. Army Europe and Africa announced Monday that the armored vehicle was removed from the swamp “after a six-day-long effort that required tremendous resources from Lithuania, our steadfast ally, and hundreds of service members from the U.S. Army, U.S. Navy, Lithuanian Armed Forces and the Polish Armed Forces – along with other elements from the Lithuanian government and civilian agencies – to solve the engineering challenge of recovering the 63-ton-vehicle from an area surrounded by unstable ground conditions.”