Jerusalem (CNN) -- Israel says all 27 activists from two aid ships stopped on their way to Gaza have been deported or are awaiting flights out, but flotilla organizers say most refuse to sign papers required to expel them. Israeli sailors boarded the Gaza-bound vessels Friday as they neared the Palestinian territory, which has been under an Israeli blockade since 2007. The Irish-registered Saoirse and the Canadian Tahrir were taken to the Israeli port of Ashdod after refusing to heed calls to turn back, the Israeli military said. Organizers of the flotilla said six people, including the captains of both vessels and two journalists, had been released by Sunday evening. The remainder refused to sign waivers allowing their deportation, the Irish group said in a statement on its website.
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NEW: Activists refuse to sign deportation papers, organizers say
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NEW: Activists criticize the Israeli military action as "violent and dangerous"
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A Canadian activist complains of rough treatment, Israel's foreign ministry says
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Previous flotillas have sparked international controversy
Activists criticized the Israeli action as "illegal" and vowed that activists "will keep coming, wave after wave" to try to deliver aid to @placeholder in Gaza.