The European Commission will propose boosting surveillance of undersea cables and establishing a fleet of vessels available to repair cables in emergencies, it said in an action plan published Friday.

Hamas released the bodies of four Israeli hostages on Thursday, including what it says are three members of the Bibas family.

Hamas said it handed over four hostages to Israel in a display a senior U.N. official called “abhorrent and cruel.” Israel later said only three bodies belonged to captives.