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.

The Israeli military says it only targets militants and tries to avoid harming civilians and blames civilian deaths on Hamas because the militants operate in densely populated areas.