At least two officers were injured in a shooting at a Fourth of July fireworks display in Philadelphia, Pennsylvania, officials said.
Police said the officers were taken to hospital and later released. No arrests had been made.
Footage by Hugh Dillon shows people running away and screaming as fireworks light up the sky.
“Sadly people were crying and falling. It was very sad. Something I will never forget,” Dillon wrote on Instagram post. Credit: Hugh Dillon via Storyful