The shocking incident happened in the city of Naples, Italy.
She was reportedly hit by a bullet while walking with her dad when gunfire erupted in the busy historic area.
The migrants – said to be from the African country Senegal – are believed to have been the targets in the shooting attack.
It happened at around 12pm (GMT) today.
The migrants, aged 36, 38 and 32, are believed to have been hit by ricochetting debris.
All four victims were taken to local hospital where one of the migrants is said to be in a serious condition.
Cops have since launched an investigation are hunting the gunman.
The Duchesca market – where the shooting took place – is known in the city for where migrant traders have stalls.
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