Bowe Bergdahl, the U.S. Army Sgt. who was held by the Taliban as a prisoner of war for five years, has returned to "regular duty," the Army confirmed on Monday.

After the 28-year-old soldier was released from captivity in Afghanistan on May 31, he began receiving treatment at the U.S. military hospital in Landstuhl, Germany. He was then flown to Texas on June 13 where he began the next phase of his rehabilitation and reintegration process at Brooke Army Medical Center in San Antonio to help him re-acclimate to society, USA Today reported.

In a brief statement, Army officials announced that Bergdahl had "completed the final phase of the reintegration process" and will be assigned to administrative duties at a base in Texas, the Los Angeles Times reported.

"He will now return to regular duty within the command where he can contribute to the mission," an Army statement said, according to USA Today.

The statement also noted that they will continue to investigate "circumstances surrounding the disappearance and capture of Bergdahl."

According to other soldiers, Bergdahl deserted his platoon in Afghanistan on June 30, 2009, and was quickly captured by the Taliban. A preliminary Army investigation also found that Bergdahl left his outpost deliberately of his own free will, according to an official briefed on the report, reports CNN.

However, as of now, the Army has no definitive evidence that Bergdahl deserted because that would require knowing his intent.

An Army spokesman said Bergdahl will live in Army barracks and work with other soldiers "who are providing leadership and guidance" at the Army North headquarters at Fort Sam Houston.

"He will be expected to fulfill his soldierly obligations. We'll do everything we can to ensure his success, just like every other junior non-commissioned officer," said Don Manuszewski, a spokesman for the U.S. Army North command at the Joint Base San Antonio-Fort Sam Houston.