NEW : Israel scolds former crew for being on Gaza - bound boat . Israeli naval vessel , boat with medical volunteers collide in Mediterranean . Each side blames the other for violating an Egyptian-brokered cease-fire , which formally expired December 19 , but had been weakening for months . Israel 's crew contends naval vessel hit it intentionally . Israel denies intentionally hitting boat carrying food , medical supplies .
NEW : Israel scolds former crew for being on Gaza - bound boat . Israeli naval vessel , boat with medical volunteers collide in Mediterranean . Israel 's crew contends naval vessel hit it intentionally . Israel denies intentionally hitting boat carrying food , medical supplies .