Spain’s National Court has opened an investigation into senior Israeli military officials over the illegal detention of activists during the interception of the Global Sumud flotilla, limiting the probe to incidents involving Spanish-flagged vessels, newspaper El Pais reported on Friday.

Judge Francisco de Jorge accepted complaints filed by the Communist Party of Spain, United Left Federal and several activists against Israeli military Chief of Staff Eyal Zamir and Israeli Navy Commander Ram Rothberg.

The complaints relate to the interception of the Global Sumud flotilla, which was carrying humanitarian aid to the Gaza Strip when it was intercepted by Israeli forces on Oct. 1.

According to the ruling, Israeli forces boarded several vessels in international waters about 70 nautical miles off the coast, including ships flying the Spanish flag.

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