Alexander Drueke (left) and Andy Huynh were filmed in separate RT videos. Photo courtesy: Twitter
United States President Joe Biden had said earlier Friday he did not know the whereabouts of Alexander Drueke and Andy Huynh, both US military veterans whose relatives lost contact with the pair.
The missing Americans — including a third identified as a former US Marines captain — are believed to be part of an unknown number of mostly military veterans who have joined other foreigners to volunteer alongside Ukrainian troops.
On Friday evening, Russian journalist Roman Kosarev — who works with state TV RT channel — posted a video on messaging platform Telegram of Drueke speaking facing the camera.
"Mom, I just want to let you know that I'm alive and I hope to be back home as soon as I can be," said Drueke, who was seated in what appeared to be an office and dressed in military fatigues.
United States President Joe Biden attends a meeting. File photo
"Love Diesel for me, love you," he said, concluding his brief video with a quick wink. Reports in the US say Diesel was Drueke's dog.
RT's official Telegram channel also posted an interview with Huynh, in which he said the duo had been "engaged in combat with Russian troops" near Ukraine's flashpoint Kharkiv area.
After the pair retreated and hid for hours, they surrendered themselves to Russian troops, Huynh said.
The pair were also filmed in separate RT videos — directly facing a camera angled from above -- saying "I'm against the war", in poor Russian.
The circumstances under which the two men were speaking were not fully clear, nor who specifically was holding them.
A US State Department spokesperson on Saturday confirmed American authorities had seen the photos and videos of the two US citizens "reportedly captured by Russia's military forces in Ukraine".
"We are closely monitoring the situation and our hearts go out to their families during this difficult time," the spokesperson told AFP.
During a White House briefing on Friday, Biden urged US citizens not to go to Ukraine.
"Americans should not be going to Ukraine now. I'll say it again: Americans should not be going to Ukraine," he said.
The Russian proxy authorities in the so-called Donetsk People's Republic, a Moscow-controlled swath of eastern Ukraine, have sentenced to death two British men and a Moroccan captured earlier in fighting.
The “stop list” includes US President Joe Biden, Vice President Kamala Harris, Morgan Freeman and fellow actor and filmmaker Rob Reiner, journalists, apart from dead Senators such as John McCain and Harry Reid.
Governor Dmytro Zhyvytskyy posted photographs of the charred shell of a four-story building and rescuers searching rubble. In a later Facebook post, he said many Russian soldiers and some local residents also were killed during the fighting on Sunday.
Kathy Lueders, who heads the agency's human spaceflight program, told reporters on a call that operations on the research platform were proceeding "nominally" and "we're not getting any indications at a working level that our counterparts are not committed."
Asad Kaleem, an executive producer at ARY, said that the action means that 4,000 employees at the TV are now without work. He pleaded with the government to reverse its decision and bring the hugely popular ARY back on air.
The cabinet shake-up, which was approved by parliament in an emergency session, affected 13 portfolios, including health, education, culture, local development and irrigation ministries.
Other infrastructure was also damaged when gusts battered the Medusa Festival, a huge electronic music festival held over six days in the east coast town of Cullera.