TEHRAN, Iran (AP) -- The Americans released by Iran have arrived in Germany, according to a U.S. State Department official speaking on condition of anonymity to discuss their status.

No other details were immediately available about how long they would remain in Germany and when they might return to the U.S.

Earlier on Sunday, the three Americans landed in Geneva aboard a Swiss air force plane.

U.S. officials had said Saturday that the released prisoners would be taken to a U.S. military hospital in Landstuhl, Germany, for medical treatment. The hospital is near the U.S. military's Ramstein Air Base.

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WASHINGTON (AP) -- President Barack Obama on Sunday heralded the release of Americans held prisoner in Iran and the full implementation of a historic nuclear accord with the Islamic Republic, holding both up as a victory for "smart" diplomacy and fulfillment of his pledge to deal directly with enemies of the United States.

"This is a good day," Obama said in a statement from the White House. "When Americans are freed and returned to their families, that's something we can all celebrate."

The president spoke at the close of an extraordinary weekend that saw back-to-back the release of five imprisoned Americans and the termination of billions in international sanctions on Iran as part of the nuclear accord.