Officials in Texas have confirmed a 14 year old child was among eight people killed at a concert in Houston on Friday.
A criminal investigation is now underway.
The rapper Travis Scott has spoken of his devastation, saying he's working to help the families of the victims.
He stopped his performance to get help as the crowd surged.
Houston Police Chief Troy Finner, says they're also looking into claims of people being injected with drugs:
"We do have a report of a security officer, according to the medical staff that was out and treated him last night, that he was reaching over to restrain or grab a citizen, and he felt a prick in his neck. He went unconscious."
