Israel has intercepted aid ships bound for Gaza in international waters near Greece, flotilla organisers said on Thursday, decrying the move as an “escalation of Israel’s impunity”.

A second flotilla carrying humanitarian aid to Palestinians in Gaza sailed from the Spanish port of Barcelona on April 12, aiming to try to break the Israeli blockade.

The vessels were seized by Israel hundreds of miles from Gaza, said the organisers, Global Sumud Flotilla.

“This is piracy,” the group said in a statement. “This is the unlawful seizure of human beings on the open sea near Crete, an assertion that Israel can operate with total impunity, far beyond its own borders, with no consequences”.

No state had the right to claim, police, or occupy international waters, but Israel had done that, extending its control outward to occupy the Mediterranean Sea off the coast of Europe, it added.

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Türkiye on Thursday called Israel’s illegal intervention against a Gaza-bound aid flotilla “an act of piracy,” saying it is taking “all necessary steps” regarding its citizens and other passengers on board, Anadolu Agency reports.

“By attacking the Global Sumud Flotilla, which sought to draw attention to the humanitarian catastrophe faced by the oppressed people of Gaza, Israel has targeted humanitarian values and international law,” the Turkish Foreign Ministry said in a statement.

It said Israel’s actions also violated the principle of freedom of navigation in international waters, adding: “We call on the international community to take a united stance against this lawless act by Israel”.

“All necessary steps are being taken in coordination with relevant countries regarding the situation of our citizens and other passengers on board the fleet,” it added.

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Israel’s UN envoy Danny Danon said the flotilla “was stopped before reaching our area”.

In a posting on X, he added, “Our brave IDF soldiers are acting with professionalism and determination, dealing with a group of delusional attention-seeking agitators,” referring to the Israeli military.

Israel’s military halted a previous flotilla assembled by the same organisation last October in an attempt to reach blockaded Gaza, arresting Swedish activist Greta Thunberg and more than 450 participants.

Israel, which controls all access to the Gaza Strip, denies withholding supplies for its residents, numbering more than 2 million.

Yet Palestinians and international aid bodies say supplies reaching the territory are still insufficient, despite a ceasefire reached in October that included guarantees of increased aid.