Israel on Tuesday returned the bodies of 80 Palestinians killed in Gaza after taking them from morgues and graves to check there were no hostages among them, sources in the territory's health ministry said. The bodes, which had been transported to Israel, were returned through the Red Cross to Hamas authorities who buried them in a mass grave in Gaza, the sources said. Around 250 hostages were taken to the Gaza Strip by Hamas militants when they attacked southern Israel on October 7.