Family lawyer of a 9-year-old boy who was stabbed at a Travis Scott concert in Houston and was on treatment for a week said the baby died from his injuries Sunday.

Ezra Blount’s death brought the total number of people killed at the Astroworld festival last week to 10, ranging in age from 9 to 27.

The death occurred when the rapper nominated by Grammy Award Scott appeared before a crowd of 50,000 at NRG Stadium. The scene began to unravel as fans rushed onto the stage.

“The Blount family is deeply saddened by the mysterious loss of their precious son,” said attorney Ben Crump.

Crump said any of the several concert executives could have prevented the deaths and injuries by stopping the show and turning on the house lights when a riot broke out.

Mr. Crump and other lawyers who were injured at the ceremony filed a series of lawsuits against Scott and the organizers, alleging neglect of public administration, failure to provide appropriate medical care and lack of emergency preparation, among other issues.

Scott on Thursday appealed to the victims and their families to speak to him, saying “they want to share their grief and help,” according to his statement. The rapper has previously donated money for funeral and mental health services.