BBC Verify: What we can see in video from Nasser hospital raid
This situation in southern Gaza's largest hospital is "catastrophic" after an Israeli raid, its director has told the BBC.BBC Verify has been analysing footage on the ground, which shows smoke-filled corridors, bodies being moved and people working to the sound of gunfire.
Israel's military says it is carrying out a "precise and limited mission" at Nasser hospital after receiving intelligence that bodies of hostages taken by Hamas were being held there.
Reporter Merlyn Thomas breaks down what we know so far.
Produced by Soraya Auer and Jemimah Herd
Additional reporting by Peter Mwai, Emma Pengelly, Richard Irvine-Brown, Kumar Malhotra, Alex Murray and Daniele Palumbo