I too have read about the Hebrew voices, intended to lead IDF soldiers into tunnels and the booby-trapped dolls and backpacks laid in the ambush.
But I think this accidental shooting was not directly part of one of those ambushes, though the tension and danger all around must certainly have been a factor. I think nine IDF soldiers were recently killed in an ambush in a building.
BBC or Channel 4 tonight had an interview with an IDF commander who explained the hostages were wearing the same sort of Palestinian civilian clothes that some Hamas wear who also have guns and grenades; and only just before the IDF had been in combat with Hamas.
It is so tragic for the hostage’s families. Imagine knowing they had managed to survive until now but all for this. I agree too that it is dreadful that the soldiers will have to carry that guilt all their lives.