Several children were killed in an Israeli airstrike at a water distribution point in central Gaza Sunday, health officials said, one of several deadly incidents in the territory that come as ceasefire talks in Doha falter.

The U.N. rights office said on Friday it had recorded at least 798 killings within the past six weeks at aid points in Gaza run by the U.S.- and Israeli-backed Gaza Humanitarian Foundation and near convoys run by other relief groups.