Former Federal Labor senator and dual Olympian Nova Peris OAM has rejected assertions she referred to an Australian aid worker killed in Gaza from an Israeli air strike as a "lowlife terrorist sympathiser".

Ms Peris has been vocal on social media in her support of Israel and condemnation of Hamas, and a comment she made on a Facebook thread from a photo she posted on Tuesday in Sydney - alongside two prominent Israeli journalists - was interpreted by some as being directed at Ms Frankcom, whose death was on Wednesday described by Prime Minister Anthony Albanese as "completely unacceptable".

Mr Albanese spoke with Israeli counterpart Benjamin Netanyahu to convey Australia's anger at Ms Frankcom's death, after the Israeli airstrike mistakenly killed seven people working in Gaza for aid charity World Central Kitchen, including Ms Frankcom, and citizens from Britain, Poland, Palestine and a dual citizen of the US and Canada, with a thorough investigation promised by the Israeli government.

"I think people, when they look at what is happening in Gaza, are very clear about the extraordinary loss of life which is there," he said on Wednesday.

Ms Peris' post on Tuesday came just days after she returned from Israel, where she published several photos and messages of support for Israel after arriving there on March 17, including from the Holocaust Museum and Hostage Square Tel Aviv, where she was attending a rally.

Back in Australia, Ms Peris continued to promote Israel and her connections there, posting a photo with prominent Israeli journalists Khaled Abu Toameh and Ehud Yaari, sparking online backlash that led to the misinterpretation

"Incredible to immerse myself in the knowledge from these two highly regarded and well respected men. Khaled Abu Toameh an award winning Israeli Arab journalist, Palestinian Affairs Correspondent and analyst and the formidable Ehud Yaari journalist, Middle East expert and commentator since 1975 that has published 8 books. Appreciate your time," she wrote.

Ms Peris has been an outspoken critic of Hamas during the war with Israel and on March 22 posted how what she had "witnessed during my time in Israel" had her "feeling distressed".

"The last 5 days has been beyond heartbreaking in so many ways," she wrote.

"I've shed many tears listening and bearing witness to the stories of horror. To the Jewish people, I'm truly sorry. I share your pain.

"I understand as a First Nation woman what it's like to have your very existence try to be erased. Today I'm here on your ancestral lands to walk, to touch, and to see your Country."

On March 24 the dual Olympian had a "fantastic briefing" in Tel Aviv with Mark Regev, an Australian-Israeli diplomat who Ms Peris said "was and still is (when called upon), Israel Prime Minister Benjamin Netanyahu's Senior Advisor for Foreign Affairs and International Communications.

The Australian-born Mr Regev was Israel's UK ambassador under Mr Netanyahu.

The next day Ms Peris had a meeting with Israel politicians Tsega Melaku & Sharon Nir in Jerusalem.

Ms Peris on Friday night would not confirm who funded her trip to Israel last month but told National Indigenous Times her "terrorist sympathiser" comments were not directed at Ms Frankcom.

She said a media release issued earlier on Friday evening by Blackfullas for Palestine - a First Nations driven platform supporting Palestinian liberation - that suggested they were, was incorrect.

"I have not at any time accused Ms Lalzawmi Frankcom of being a terrorist sympathiser," she said on Friday night.

"I express my continued support for, and condolences to, Ms Frankcom's family and friends for the loss of their loved one."

In February Ms Peris - the first Indigenous woman elected to Federal Parliament - argued the Indigenous flag had been misappropriated at pro-Palestine rallies.

A descendant of the Gija people of the East Kimberley, the Yawuru people of the West Kimberley and the Iwatja and Gagudju people of West Arnhem Land, Ms Peris was part of the campaign to free the Aboriginal flag for community use, which resulted in the Federal Government paying $20m for the flag to be transferred to public hands in 2022.

Indigenous senator Lidia Thorpe last week accused Labor of being complicit in genocide in Gaza, and urged the government to back a permanent ceasefire.