Social media videos -- which was not able to verify -- showed bodies covered in blood and dust on the floor of a building, where mattresses had been wedged under school tables. A separate strike on another building in the camp on Saturday killed 32 people from the same family, 19 of them children, the health ministry official said. Jabalia is the biggest refugee camp in Gaza, where some 1.6 million have been displaced by more than six weeks of fighting between Israel and Hamas.