A total of eight people have been injured after a tree "unexpectedly broke and fell” - with one of them fighting for their life.
The horror accident happened at around 2.05pm local time (7.05pm GMT) on Wednesday afternoon as hundreds of families and visitors were visiting San Antonio Zoo, in Texas, US.
Staff members quickly rushed to the victims after there was "a lot of blood at the scene", according to one eyewitness whose daughter was hit by the branch.