The sister of Imani Green said she found the eight-year-old in a pool of blood after a lone gunman shot her twice in front of relatives in a cafe in Jamaica on Friday.
Janella Palmer, 19, told the BBC her sister was still breathing when she reached her.
We heard gunshots. We ran outside and shouted 'Imani, Imani, Imani'.
I picked her up off the ground and realised she was still breathing. I flagged down a car and they drove us to hospital. The rest is history.
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The entertainer, 65, brought the legal action against Essex police over a wrongful arrest which he says destroyed his career.
The Holby City star, who had been visiting Barcelona, detailed the events of the attack on Twitter as they unfolded.
Searches are continuing for victims, with around 600 people still missing and 3,000 left homeless after the disaster.