Italian prosecutors have opened an investigation into the detention of activists after Israeli forces intercepted a Gaza-bound aid flotilla at sea, Italian media report. The probe is linked to complaints filed with Rome authorities regarding the detention of Spanish citizen Saif Abu Keshek and Brazilian Thiago Avila. Both were travelling on an Italian-flagged vessel as part of the Global Sumud flotilla, which departed from France, Spain and Italy with more than 50 boats aimed at delivering humanitarian supplies to Gaza. The flotilla is reported to have been intercepted in international waters off Greece near Crete, on Thursday. Israel says it removed about 175 activists; most were later released. Abu Keshek and Avila were taken to Israel for questioning, and an Israeli court extends their detention by two days. Italian and Spanish officials and organisers describe the interception as a violent raid, with reports that Israeli forces disabled boats. Italy’s prosecutor’s office also says it is examining a prior flotilla incident last year, following complaints and allegations of offences including torture.