Sources: 

Israel's interception of a Gaza flotilla near Crete on April 30 resulted in the detention of
211 activists, with Spanish Prime Minister
Pedro Sanchez condemning the operation for violating international law. The raid occurred in international waters and involved around
22 boats originally destined for Gaza.
Organisers stated that Israel's actions included the 'systematic disabling and destruction' of the flotilla vessels during a violent raid. The
Global Sumud Flotilla, comprised of 58 boats carrying humanitarian aid, had departed two weeks prior from numerous European countries, including Spain and France.
In addition to activists,
Reporters Without Borders condemned the detention of three journalists on board, calling it a 'kidnapping' by the Israeli army. The detainees, Hafed Mribah, Mahmut Yavuz, and Alex Colston, sparked further concerns regarding press safety during the ongoing Gaza conflict. Al Jazeera and other media outlets echoed calls for accountability from Israel, demanding the safety of their employees and adherence to international law.
In response, Israel defended the action stating the need to maintain a lawful blockade while assuring that its operations were in compliance with international law. The situation escalated with numerous political figures urging a reevaluation of diplomatic ties to Israel amidst the unfolding humanitarian crisis.
Sources: 

Israel has intercepted a Gaza-bound flotilla near Crete, detaining 211 activists, including a Paris city councillor. The operation has drawn condemnation from Reporters Without Borders (RSF), which criticized the 'kidnapping' of three journalists aboard the vessels in international waters.