Bernie Sanders claimed recently that "over 10,0000 innocent" Palestinians were killed by Israelis during the summer 2014 Gaza War as the result of an "indiscriminate" military operation.

These figures are much higher than those accepted by any side of the conflict.

The Democratic primary candidate acknowledged to the New York Daily News that he wasn't sure if those numbers were exactly accurate.

"Anybody help me out here, because I don't remember the figures, but my recollection is over 10,000 innocent people were killed in Gaza. Does that sound right?" Sanders said in an interview with the newspaper's editorial board on Monday.

Once told that the number was high, the Vermont denator responded "I don't have it in my number ... but I think it's over 10,000. My understanding is that a whole lot of apartment houses were leveled," he went on. "Hospitals, I think, were bombed. So yeah, I do believe and I don't think I'm alone in believing that Israel's force was more indiscriminate than it should have been."

Sanders' estimate far exceeds even Palestinian sources, which estimate that 1,462 Palestinians were killed out of the 2,251 Gaza War fatalities in 2014. Israeli figures are lower.

Sanders' comments come just weeks after he became the only candidate in the race to turn down an invitation to speak at the annual American Israel Public Affairs Committee conference in Washington, D.C.

While his main opponent Hillary Clinton received a standing ovation for speaking about the importance of defending Israel, Sanders gave a policy speech from Utah about the importance of "security for every Palestinian." As the only Jewish candidate in the race, Sanders also has personal ties to Israel as he spent a few months living on a Kibbutz in his youth where he met his first wife.

Sanders' comments gained the attention of prominent Israeli newspapers such as the Times of Israel, Arutz Sheva and the Jerusalem Post.