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

Gaza's civil defence agency said Israeli air strikes on Sunday killed more than 40 Palestinians, including at a market and a water distribution point, as talks for a ceasefire between Israel and Hamas stalled.

Israeli strikes in the Gaza Strip killed at least 19 people on Sunday, including six children at a water collection point, local health officials said, despite attempts by mediators to bring about a ceasefire. Israel and Hamas appeared no closer to a breakthrough in talks meant to pause the 21-month war and free some Israeli hostages.