(AP) -- A U.S. military hospital in Germany says Army Sgt. Bowe Bergdahl is in "stable condition and receiving treatment for conditions requiring hospitalization" after arriving from Afghanistan and five years of captivity.

The Landstuhl Regional Medical Center says Bergdahl's treatment "includes attention to dietary and nutrition needs after almost five years in captivity" but declined to release further details about his medical condition due to patient privacy laws.

The hospital said in a statement Monday that "there is no pre-determined amount of time involved in the reintegration process" for the 28-year-old.

Meanwhile, the Obama administration faces mounting questions over the prisoner swap that won freedom for Army Sgt. Bowe Bergdahl after five years in Taliban hands.

The release of five terrorist suspects from Guantanamo Bay, Cuba, is stirring a debate over whether the exchange will heighten the risk of other Americans being snatched as bargaining chips and whether the released detainees will find their way back to the fight.

U.S. officials say that Bergdahl's health and safety appeared in jeopardy, prompting their quick action.

Republicans say the deal could set a troubling precedent. Arizona Sen. John McCain calls the five released Guantanamo detainees "the hardest of the hard core.