Four girls, aged 12 to 14, are arrested over fatal stabbing of 15-year-old girl in a Walmart after they 'stole a knife from the store' in a fight that was streamed live on social media
The 15-year-old girl died in hospital after being stabbed inside a Walmart at Lake Charles in Louisiana on Saturday night
Police say a 12-year-old, two 13-year-olds and a 14-year-old have been arrested
The girls allegedly used a knife they had stolen from the store in the fatal attack
Prior to the arrest, authorities had released a surveillance image of one of the 13-year-old girls fleeing the store after the stabbing in a bid to track her down