Iran’s Foreign Ministry spokesman has called on the international community to take decisive action to secure the release of vessels from the Global Sumud Flotilla 2, condemning Israel’s interception of the ships as an act of “piracy” and “state terrorism”.

The Global Sumud aid flotilla plans to set sail again for war-torn Gaza from Barcelona on March 29, with significantly broader international participation, organizers announced on Thursday.

An Italian charity has accused Israel of blocking 250 tons of humanitarian aid intended for Gaza, citing disputes over the shipment’s contents and registration procedures.

Israel said on Thursday it will deport to Europe pro-Palestinian activists on an aid flotilla headed towards Gaza as the Israeli navy intercepted vessel after vessel in the Mediterranean.

The Global Sumud Flotilla, currently sailing to challenge Israel’s blockade of Gaza, reported early Wednesday that its vessels are now approximately 121 nautical miles (225 kilometers) from the coastal enclave.

Activists from 44 countries have begun gathering in Tunisia for the Global Sumud Flotilla, an international initiative aiming to break Israel’s blockade of Gaza and deliver humanitarian aid. Vessels from Spain and Italy will meet ships from Tunisia before sailing together toward Gaza.

A civilian ship carrying humanitarian aid for Gaza was targeted in a drone attack early Friday while sailing in international waters near the island of Malta, the Freedom Flotilla Coalition said in a statement.