Human rights lawyer Geoffrey Nice says the findings of an Israeli investigation into the slaying of 15 Palestinian paramedics and aid workers in Gaza raise questions about the Israeli military’s conduct in the Strip and the thoroughness of the investigative process.

“It’s a pretty surprising document. It’s also a document that invites many questions that it will be difficult, I suspect, for the [Israeli military] to answer,” Nice told Al Jazeera in a television interview.

“For example, [there is] the proposition that six of these people were Hamas, presumably members of Hamas on active [military] service, not people who might have been associated with Hamas in some way. No documentary evidence at all is identified [for that],” he added.