The bodies of three U.S. Army soldiers have been found nearly a week after they went missing in Lithuania during a training exercise, officials said.

Three American soldiers were declared deceased on Monday after crews in Lithuania retrieved the M88 Hercules armored recovery vehicle they were traveling in, which sank in a swamp last week.

The search for a fourth soldier is ongoing in a swampy bog near Pabradė, where they were taking part in military drills.

The bodies of three of the four US soldiers who were reported missing after their vehicle was submerged in a bog in Lithuania last week have been recovered, the Army announced on Monday. The vehicle has also been recovered.

The bodies of the three soldiers were recovered after a massive six-day effort by U.S., Polish and Lithuanian armed forces and authorities.

The bodies of three U.S. Army soldiers who went missing in Lithuania during a training exercise last week have been found, and one remains missing, military officials said Monday. The soldiers went missing the morning of March 25 after their M88A2 Hercules armored recovery vehicle became submerged in a peat bog during a training exercise with Lithuanian armed forces and law enforcement.

The U.S. Army vehicle four soldiers were in when they went missing in Lithuania has been pulled from a swamp after six days of "relentless" effort to retrieve it.

The three soldiers were been found dead in their armored vehicle that was pulled from a swampy area early Monday, the Army said.

A U.S. Army armored vehicle swallowed by a Lithuanian bog with four American soldiers on board was pulled free Monday after a major five-day international recovery operation, authorities in Vilnius said.