KIEV, Ukraine - The Latest on Ukrainian pilot Nadezhda Savchenko (all times local):

8:55 p.m.

U.S. Ambassador Samantha Power says that Washington is "overjoyed" at Nadezhda Savchenko's return to Ukraine.

Power, the U.S. envoy to the United Nations, said that in the nearly two years following her capture, Savchenko endured "inhumane imprisonment, countless interrogations, solitary confinement, the deterioration of her health, and farcical Russian legal proceedings."

"Much work must still be done to restore Ukraine's territorial integrity - but today is a day for celebration in Ukraine, as one of its patriots has finally returned home," Power said in a statement.

Savchenko, who was being held in Russia on a 22-year prison sentence, was swapped Wednesday for two Russian servicemen who had been imprisoned in Ukraine.

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8:25 p.m.

The U.S. secretary of state is expressing satisfaction with the release of Ukrainian pilot Nadezhda Savchenko from nearly two years of Russian custody as well as Ukraine's decision to release two Russians who had been convicted of waging war in eastern Ukraine.

John Kerry said in a statement Wednesday that the release of Savchenko "after a long ordeal that included solitary confinement is an important part of fulfilling Russia's commitments under the Minsk agreements" on calling a cease-fire in the conflict between Ukrainian forces and Russia-backed rebels in eastern Ukraine that has killed for than 9,300 people.

Cease-fire violations have been reported almost daily in recent months and movement toward fulfilling the Minsk agreements is slow and fitful.

Kerry said Savchenko's release "should now provide impetus for their complete implementation."

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5:45 p.m.

A top European human rights official has welcomed the release of Ukrainian pilot Nadezhda Savchenko by Russia and said he hopes it will lead "to more good things."

Council of Europe Secretary General Thorbjorn Jagland described Savchenko's release after two years in captivity as "a very good development," noting she is also a member of the Council of Europe's parliamentary assembly.

Jagland made the comment to The Associated Press during a visit to Athens, saying he had asked for Savchenko's release "for a very long time."

Savchenko, who was being held in Russia on a 22-year prison sentence, was swapped Wednesday for two Russian servicemen who had been imprisoned in Ukraine.

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4:55 p.m.

Germany's foreign minister says he's relieved about the release of Ukrainian pilot Nadezhda Savchenko.

Savchenko, who was being held in Russia on a 22-year prison sentence, was swapped Wednesday for two Russian servicemen who had been imprisoned in Ukraine, Alexander Alexandrov and Yevgeny Yerofeyev.

Minister Frank-Walter Steinmeier says he hopes the exchange of prisoners will contribute to "building confidence between Ukraine and Russia" and spur efforts to implement the Minsk peace agreement for eastern Ukraine, where Russian-backed separatists are fighting the Ukrainian government.

Steinmeier added he wished "Ms. Savchenko a speedy health improvement."

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3:35 p.m.

Ukrainian pilot Nadezhda Savchenko has returned to Kyiv after nearly two years of being imprisoned in Russia.

Ukrainian President Petro Poroshenko and Russian President Vladimir Putin's spokesman confirmed that the plane carrying Savchenko from Rostov-on-Don had landed Wednesday at Kyiv's Borispol Airport.

Savchenko was swapped for two Russian servicemen imprisoned in Ukraine, Alexander Alexandrov and Yevgeny Yerofeyev. Russian state television showed them arriving at a Moscow airport on Wednesday.

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3:30 p.m.

Russian President Vladimir Putin says in televised comments that he has decided to pardon Ukrainian pilot Nadezhda Savchenko, who has become the national rallying cause in Ukraine.

Putin was shown on national television on Wednesday meeting two young women described as relatives of the two Russian journalists who were killed in a mortar attack in eastern Ukraine in June 2014. Savchenko was sentenced to 22 years in prison by Russia for the involvement in that attack.

Putin says he made the decision to release Savchenko after the relatives of the killed journalists petitioned him to show mercy to Savchenko.

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This item has been corrected to show that the first name of the pilot is Nadezhda, not Nadezda.

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10 a.m.

Russia on Wednesday released Ukrainian pilot Nadezhda Savchenko as part of a swap for two Russian servicemen jailed in Ukraine, an official in the Ukrainian presidential administration said.

Savchenko was being flown to Kyiv aboard Ukrainian President Petro Poroshenko's plane, according to the official, who spoke to The Associated Press on condition of anonymity because he was not authorized to release the information.

Kremlin-funded television station RT, citing unidentified sources, reported that the two Russians also were released and were being flown to Moscow.

Savchenko was certain to be greeted by crowds of supporters in Ukraine, where her refusal to bend after nearly two years in Russian custody has made her a national hero. Savchenko was captured by Russia-backed rebels in eastern Ukraine in 2014 and sentenced in March to 22 years in prison for her alleged role in the deaths of two Russian journalists in the conflict zone.

The two Russians, Alexander Alexandrov and Yevgeny Yerofeyev, were captured last year. They acknowledged being Russian officers, but the Russian Defence Ministry claimed they had resigned from active duty. They were tried in a Kyiv court, which sentenced them to 14 years in prison after finding them guilty of terrorism and waging war in eastern Ukraine.

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Lynn Berry and Nataliya Vasilyeva in Moscow contributed reporting.

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A previous version of this story was corrected to show that on first reference the name of the pilot is Nadezhda, not Nadezda.

News from © The Associated Press, 2016