Israel’s foreign ministry posted on X that “the deportees were citizens of Greece, Italy, France, Ireland, Sweden, Poland, Germany, Bulgaria, Lithuania, Austria, Luxembourg, Finland, Denmark, Slovakia, Switzerland, Norway, the UK, Serbia, and the United States.” The post included photos of Thunberg and other activists wearing white T-shirts and grey sweatpants.

9news.com.au has contacted the Department of Foreign Affairs and Trade to confirm whether or not the Australian activists aboard the same flotilla were among those released.

Thunberg was among dozens of deportees to land in Athens, Greece, on Monday afternoon local time. Crowds of supporters gathered at the Eleftherios Venizelos international airport and chanted “Free free Palestine!” as activists disembarked one by one.

“That this mission has to exist, it’s a shame! It is a shame!” Thunberg told journalists and protesters shortly upon arriving.

“I could talk for a very, very long time about our mistreatment and abuses in our imprisonment, trust me, but that is not the story.”

Instead, Thunberg urged world leaders and ordinary citizens around the world to end their “complicity” with the “genocide” being carried out against Palestinians in Gaza.

“This action was challenging our extremely violent business as usual,” Thunberg said. “We cannot take our eyes away from Gaza.”

Israeli authorities rejected once again mistreatment accusations that have emerged in interviews with activists who were deported to Turkey, Spain and Italy over the weekend.

Israel’s government has also vehemently denied claims that its offensive in Gaza amounts to genocide, despite a growing number of experts denouncing it as such.

Lubna Tuma, a lawyer with the Adalah association representing more than 470 Global Sumud Flotilla participants who were detained last week as they attempted to break the Israeli siege of the Gaza strip, said that 150 people were still being held in Israel’s Ktziot prison, including Nelson Mandela’s grandson, Mandla Mandela.

Forty of them were on hunger strike, including many Tunisians.

“Some stated that they prefer that their food go to the people in Gaza,” Tuma said during a live briefing on Monday that was broadcast on Adalah’s and the flotilla’s Instagram accounts.

Others were also refusing to drink water “until medical treatment is given to all detainees,” she said.

Though Adalah lawyers have seen most, but not all, of the activists by now, Tuma said Israeli authorities have repeatedly violated activists’ rights.

Tuma said it started with their interception in international waters and continued with their transfer to Israel and subsequent detention in a maximum security prison where Tuma said activists were subject to physical violence and humiliation.

Israeli authorities have strongly rejected the claims, reiterating that the detainees’ rights had been respected throughout their detention.

Israel’s foreign ministry instead accused one activist of biting a female medical staff member.

South Africa’s government said that its citizens would be released and repatriated on Tuesday via Jordan.

Several other governments that had citizens taking part in the flotilla have said their embassies in Israel were working closely with Israeli authorities to make sure activists were released and sent home as swiftly as possible.

The interception of the flotilla led to large-scale demonstrations in cities across the world and large gatherings at airports to welcome deportees.

Several activists who were freed in the last two days have given testimonies alleging mistreatment by Israeli authorities.

“There was some dehumanising and violence and shouting,” Roos Ykema, a Dutch member of the flotilla who was deported to Madrid on Sunday, told The Associated Press.

“But we got the European treatment,” she added.

Her comments were echoed by former Barcelona mayor Ada Colau, who returned to the Spanish city late on Sunday.

“We were detained in a maximum security prison where there was no rule of law, they didn’t respect any of our rights,” Colau told journalists upon landing.

“But we know this is nothing compared to what the Palestinian people are suffering every day in Gaza.”