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.

Gaza health officials say Israeli airstrikes have killed at least 19 people including six children at a water collection point.

Gaza ceasefire talks hung in the balance as Hamas and Israel on Saturday accused the other of blocking attempts to strike a deal, nearly a week into an attempt to halt 21 months of bitter fighting in the Palestinian territory.