""The implication is that the [Israeli Defense Forces] deliberately aided the killers," Morris writes. "This is essentially untrue." As proof, he references the Kahan Commission of Inquiry, which—he claims—comes to the conclusion that the Israeli army had been unaware that a massacre was taking place and that "when awareness finally dawned, it intervened and stopped it. "
http://nationalinterest.org/feature/what-benny-morris-gets-wrong-about-my-book-11601

The ICRC supervised the burials, and it may well be that the IDF supplied them with equipment to bury the bodies.